St. Cyril of Alexandria Eucharistic Quotes:

Our Lord Jesus Christ joined together on the same day the paschal lamb of the Jews and the True Manna when blessing the bread and the wine He said: "This is My Body, this is My Blood."

- St. Cyril of Alexandria

"When we ingest the Eucharist in reality we are ingesting the Godhead
.....because His Body and Blood are diffused through our members we become
partakers of the divine nature."

- St. Cyril of Alexandria

Since Christ Himself said in reference to the bread: "This is My Body," who will dare remain hesitant? And since with equal clarity He asserted: "This is My Blood," who will dare entertain any doubt and say that this is not His Blood?... You have been taught these truths. Imbued with the certainty of faith, you know that what seems to be bread is not bread but the Body of Christ, although it seems to be bread when tasted. You also know that what seems to be wine is not wine but the Blood of Christ although it does taste like wine.

- From a catechetical instruction given by Saint Cyril of Jerusalem for his successor John in the 4th century

"He who receives Communion is made holy and Divinized in soul and body in the same way that water, set over a fire, becomes boiling... Communion works like yeast that has been mixed into dough so that it leavens the whole mass; ...Just as by melting two candles together you get one piece of wax, so, I think, one who receives the Flesh and Blood of Jesus is fused together with Him by this Communion, and the soul finds that he is in Christ and Christ is in him,"

- St. Cyril of Alexandria
 

"If the poison of pride is swelling up in you, turn to the Eucharist; and that Bread, Which is your God humbling and disguising Himself, will teach you humility. If the fever of selfish greed rages in you, feed on this Bread; and you will learn generosity. If the cold wind of coveting withers you, hasten to the Bread of Angels; and charity will come to blossom in your heart. If you feel the itch of intemperance, nourish yourself with the Flesh and Blood of Christ, Who practiced heroic self-control during His earthly life; and you will become temperate. If you are lazy and sluggish about spiritual things, strengthen yourself with this heavenly Food; and you will grow fervent. Lastly, if you feel scorched by the fever of impurity, go to the banquet of the Angels; and the spotless Flesh of Christ will make you pure and chaste,"

- St. Cyril of Alexandria

"In Cana of Galilee Christ changed water into wine, and shall we think Him less worthy of credit when He changes wine into His Blood?,"

- St. Cyril of Jerusalem

"By partaking of the body and blood of Christ you become one body and
one blood with him.  In such a way you become bearers of Christ, his body
and blood spread through your limbs.  In this way you become, in the words
of St. Peter, 'partakers of the divine nature'." (St. Cyril of Jerusalem)