Nicene and Post-Nicene Fathers, Ser. II, Vol I:
The Life of Constantine with Orations of Constantine and Eusebius.: Chapter LV

Chapter LV.—Constantine gives Glory to God, makes Grateful Acknowledgment of the Sign of the Cross, and prays for the Churches and People.

And now I beseech thee, most mighty God, to be merciful and gracious to thine Eastern nations, to thy people in these provinces, worn as they are by protracted miseries; and grant them healing through thy servant. Not without cause, O holy God, do I prefer this prayer to thee, the Lord of all. Under thy guidance have I devised and accomplished measures fraught with blessings: preceded by thy sacred sign I have led thy armies to victory: and still, on each occasion of public danger, I follow the same symbol of thy perfections while advancing to meet the foe. Therefore have I dedicated to thy service a soul duly attempered by love and fear. For thy name I truly love, while I regard with reverence that power of which thou hast given abundant proofs, to the confirmation and increase of my faith. I hasten, then, to devote all my powers to the restoration of thy most holy dwelling-place, which those profane and impious men have defiled by the contamination of violence.