"This is my Body." "This is my Blood."
See also:
Luke 22:20 And in the same way He took the cup after they had eaten, saying, "This cup which is poured out for you is the new covenant in My blood.
1 Cor. 10:16 Is not the cup of blessing which we bless a sharing in the blood of Christ? Is not the bread which we break a sharing in the body of Christ?
1 Cor. 11:27 Therefore whoever eats the bread or drinks the cup of the Lord in an unworthy manner, shall be guilty of the body and the blood of the Lord.
... which indicate that the "eucharist" is bread and wine that represent the reality of what our Lord did on the cross.