I would recommend focusing on Who Jesus claimed to be.
I was speaking to a muslim some time ago that I later learned had converted. It was a pretty short conversation, and she was hesitant about identifying her religion... but she was wearing muslim garb.
In the conversation I asked her why they killed Jesus.
She wasn’t sure.
I told her... his accused crime was blasphemy.... claiming to be God... That is why they killed him.
I also mentioned what Jesus Himself said about the greatest love that anyone can demonstrate... to lay his life down for a friend.
With those two truths in mind which are irrefutable, It is quite revealing to ask “Has God ever shown us this ‘greatest love’ that Jesus spoke of?”
Are you saying Jesus was not the son of God? Are you saying Jesus is not your Savior? He sure is mine