Matthew 26:39

And going a little farther he fell on his face and prayed, "O my Father, if it is possible, let this cup pass from me; nevertheless, not as I will, but as you will."

Matthew 27:46

And about the ninth hour Jesus cried out with a loud voice, "Eli, Eli, lama sabachthani?" that is, "My God, my God, why have you forsaken me?"

Treasury of Scripture Knowledge

Summary

O my God, my soul is cast down within me: therefore will I remember thee from the land of Jordan, and of the Hermonites, from the hill Mizar.

Bible References

My god

Matthew 26:39
And going a little farther he fell on his face and prayed, "O my Father, if it is possible, let this cup pass from me; nevertheless, not as I will, but as you will."
Matthew 27:46
And about the ninth hour Jesus cried out with a loud voice, "Eli, Eli, lama sabachthani?" that is, "My God, my God, why have you forsaken me?"