Matthew 26:39

Going on a little further, he threw himself on his face in prayer. "My Father," he said, "if it is possible, let me be spared this cup; only, not as I will, but as thou willest."

Matthew 27:46

And about three Jesus called out loudly: "Eloi, Eloi, lema sabacthani"--that is to say, 'O my God, my God, why has thou 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
Going on a little further, he threw himself on his face in prayer. "My Father," he said, "if it is possible, let me be spared this cup; only, not as I will, but as thou willest."
Matthew 27:46
And about three Jesus called out loudly: "Eloi, Eloi, lema sabacthani"--that is to say, 'O my God, my God, why has thou forsaken me?'