Simply "Praise Cyric the Wise!" would be the best, I think. Also, "Praise Cyric the Wise for keeping his word!" "My destiny has come!" "The day of my glory has come!" "The word is ready to kneel before Tiax!" (btw, as his in-game texts use DESTINY, here it would work, too, I suspect.) Or any of your choice.
Also, while we are at it: I fully agree that Tiax resided in Cyric's realm. But I am not sure about "He sent me forth from his realm of the dead to this place?" phrase, because the words "realm of the dead" vividly remind me of Kelemvor. A simple "But... why has He sent me forth from his realm?" or "But... why has He sent me forth from his realm to his place?" would be sufficient, I think - but that's just my observation.