That looks like a mixture of Greek and Arabic letters.
OK, What is the Name now?
Be it known unto you all, and to all the people of Israel, that by the name of Jesus Christ of Nazareth, whom ye crucified, whom God raised from the dead, even by him doth this man stand here before you whole. This is the stone which was set at naught of you builders, which is become the head of the corner. Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved. (Acts 4:10-12 KJV)
Sorry... It looks like a mixutre of Greek and Roman letters.
Nope, all Greek, omicron omega nu.
Of course, Christ, the Existing-One (to translate the Greek, or its Hebrew equivalent YHVH) into English, is the same person as Jesus Christ. Quarrelling about folks who have, at one place, expressed sound Christology, confessing Christ to be one person in two natures, at once fully human and fully divine, at another making a linguistic distinction when speaking of Him before His Incarnation by using only phrases and words which refer to His divine nature is a bit odd and not very fruitful.
The fundamental private prayer in Orthodox Christian spirituality is "Lord Jesus Christ, Son of God, have mercy on me a sinner." (Though shorter versions are also used, including even the simple repetition of the name "Jesus").