The eagle may be discussed here, but for raptors my choice would be the Great Horned Owl. I have rehabbed both of them and the Great Horned Owl is pretty darn tough and I think a cat would be nothing but food for a Great Horned Owl.
Owls are the most awesome creatures in nature IMO. There are beautiful and there is so much folklore with them. That’s awesome that you have had the opportunity to interact with them.
I saw one at a friend’s house this past year and let me just say that those suckers are HUGE! Awesome to see one.