How do you help a logical thinker when you are an emotional thinker?

This is coming from a desperate wife 34F. I need a logical thinking man's perspective. My husband 36M and I are going through an incredibly difficult time. Our marriage is okay, no one has cheated or anything. I feel like that would be an easier situation to navigate.

I don't want to get into the nitty gritty details but,

we are going through a long and intense legal battle with his step dad. Things have been blown up, and he is tired. I dont know what to say or do to help him stay strong so he can continue fighting this issue. He is a logical thinker, and I'm an emotional one. I am worried he is going to give in just to make it stop. However, that can't happen. Fo the record, if he was what his stepfather is trying to make everyone think he is, then I wouldn't be worried about it. But he is a good man who had had his light stolen from him. I worry that this man will completely destroy his soul regardless of the legal outcome. Is there anything I can say or do to keep him strong?