What is the ruling on speaking about Christ (peace be upon him) and his status in Islam on the occasion of Christian holidays?

It is forbidden to celebrate Christmas or participate in it, because it is an innovated holiday that involves acknowledging the disbelief of the Christians. However, there is no harm in speaking about Jesus (peace be upon him) during the days Christians celebrate his birth, without participating in their celebrations, in order to clarify that he is a prophet and messenger and not a god or son of a god, and that salvation is achieved by following the Prophet Muhammad (peace be upon him) and entering Islam.