How do Protestants interpret "Give us this day our daily bread"?

Tertullian wrote this about the petition (emphasis mine).

“Give us this day our daily bread,” spiritually. For Christ is our Bread; because Christ is Life, and bread is life. “I am,” saith He, “the Bread of Life;”8799 and, a little above, “The Bread is the Word of the living God, who came down from the heavens.”8800 Then we find, too, that His body is reckoned in bread: “This is my body.”8801 And so, in petitioning for “daily bread,” we ask for perpetuity in Christ, and indivisibility from His body. But, because that word is admissible in a carnal sense too, it cannot be so used without the religious remembrance withal of spiritual Discipline; for (the Lord) commands that bread be prayed for, which is the only food necessary for believers; for “all other things the nations seek after.”+ -On Prayer chapter VI-

From that, I suspect most Protestants would agree that the bread is spiritual food, rather than a resacrifice of Christ's one sacrifice. And that we'd agree it is a petition for physical food, being of the same substance, yet not identical.

As far back as the start of the 18th century, Reformed Protestants understood the petition in Matthew 6:11 as a request to God (from whom all good gifts come) to provide them with their daily physical needs – such as bread to eat. The Nonconformist Presbyterian minister Matthew Henry had this to say about praying to God for our daily bread:

4. Give us this day our daily bread. Because our natural being is necessary to our spiritual well-being in this world, therefore, after the things of God's glory, kingdom, and will, we pray for the necessary supports and comforts of this present life, which are the gifts of God, and must be asked of him, ***Ton arton epiousion—***Bread for the day approaching, for all the remainder of our lives. Bread for the time to come, or bread for our being and subsistence, that which is agreeable to our condition in the world (Prov. 30:8), food convenient for us and our families, according to our rank and station.

Every word here has a lesson in it: (1.) We ask for bread; that teaches us sobriety and temperance; we ask for bread, not dainties, not superfluities; that which is wholesome, though it be not nice. (2.) We ask for our bread; that teaches us honesty and industry: we do not ask for the bread out of other people's mouths, not the bread of deceit (Prov. 20:17), not the brad of idleness (Prov. 31:27), but the bread honestly gotten. (3.) We ask for our daily bread; which teaches us not to take thought for the morrow (v. 34), but constantly to depend upon divine Providence, as those that live from hand to mouth. (4.) We beg of God to give it us, not sell it us, nor lend it us, but give it. The greatest of men must be beholden to the mercy of God for their daily bread, (5.) We pray, "Give it to us; not to me only, but to others in common with me." This teaches us charity, and a compassionate concern for the poor and needy. It intimates also, that we ought to pray with our families; we and our households eat together, and therefore ought to pray together. (6.) We pray that God would give us this day; which teaches us to renew the desire of our souls toward God, as the wants of our bodies are renewed; as duly as the day comes, we must pray to our heavenly Father, and reckon we could as well go a day without meat, as without prayer. Source: https://www.christianity.com/bible/commentary/matthew-henry-complete/matthew/6

I was curious about the Latin phrase Ton arton epiousion so I did a quick search and found this:

Epiousios (ἐπιούσιος) is a Greek adjective used in the Lord's Prayer verse "Τὸν ἄρτον ἡμῶν τὸν ἐπιούσιον δὸς ἡμῖν σήμερον" 'Give us today our epiousion bread'. Because the word is used nowhere else, its meaning is unclear. It is traditionally translated as "daily", but most modern scholars reject that interpretation... Daily has long been the most common English translation of epiousios. It is the term used in the Tyndale Bible, the King James Version, and in the most popular modern English versions. This rests on the analysis of epi as for and ousia as being; the word would mean "for the [day] being" with day being implicit. Source: https://en.wikipedia.org/wiki/Epiousios

Regardless of whether “daily” is the correct interpretation in Matthew 6:11, Protestants understand this to mean we look to God to provide us with our basic needs for food, such as bread (which is a staple part of our diet), to sustain our bodies. It is not taken to mean communion, and neither is it taken to mean a literal slice of bread once a day.

I take it to mean physical sustenance sufficient unto the day to keep us healthy and whole. After all, Jesus told us not to worry about what we shall eat, or what we shall wear, knowing that our Father in heaven provides for our every need.

My guess is something like what R.C. Sproul, a Presbyterian, articulates here is common among Protestants.

As he says,

"[B]read was a powerful symbol of God's provision for His people in the Old Testament."

The manna that came to the ancient Jews while in the desert could only be taken for the day's needs, hence daily bread. As Sproul continues

"This petition of the Lord's Prayer, then, teaches us to come to God in a spirit of humble dependence, asking Him to provide what we need and to sustain us from day to day."