It’s in my Siddur! Hallelujah is said multiple times during mincha.
At least where I daven
I heard, and read (sorry can’t remember where) that we aren’t supposed to speak the name of idols. Jesus, which is the first name, should not pronounced that way. I’ve heard him called J.C. Yeshkie, and a few other things by Jews, I say Hey-sus, like they do in Spanish. Maybe I shouldn’t. Never thought about that until now.
Christ means “savior”. He’s not my savior, so I never say that, and I try to correct other Jews when they do.