en_tn_lite_do_not_use/mat/26/67.md

Then they

Possible meanings are 1) "Then some of the men" or 2) "Then the soldiers."

spit in his face

This was done as an insult.

Prophesy to us

Here "Prophesy to us" means to tell by means of God's power. It does not mean to tell what will happen in the future.

you Christ

Those hitting Jesus do not really think he is the Christ. They call him this to mock him. (See: rc://en/ta/man/translate/figs-irony)