I believe EWTN has a book in their catalogue available for anyone who wants to follow the Mass and has trouble with Latin. I bought an old missal, made in 1956, at a second hand store. Here are a couple of the communion prayers.
Lord, I am not worthy that Thou shouldst enter under my roof; say but the word, and my soul shall be healed.
In Latin:
Domine, non sum dignus, ut intres sub tectum meum: sed tantum dic verbo, et sanabitur anima mea.
When the priest elevates the Blessed Sacrament:
Behold the Lamb of God, behold Him who takes away the sins of the world.
Latin:
Ecce Agnes Dei, ecce qui tollit peccata mundi.
If you listen carefully, you eventually pick up the pronunciation and the key words.
At the end of the Mass the muffled prayer they are reciting is the prayer to St. Michael the Archangel.
**"St. Michael the Archangel, **
defend us in this day of battle,
Be our protection against the snares and wickedness of the devil,
May God rebuke him we humbly pray,
and do thou O prince of the heavenly hosts,
By the power of God, cast into hell Satan and all other evil spirits,
who prowl throughout the world seeking the ruin of souls."
It was written by Pope Leo XIII near the close of the 19c. in response to a vision he is purported to have experienced foretelling the evil of the 20c. which was unleashed on the world. The prayer is a mini-exorcism prayer. With hindsight we know how prescient he was.