If you are unshaken by something, you are not emotionally affected by it. Mona remains unshaken by her ordeal and is matter-of-fact about her courage. not having changed your attitude or belief unshaken in
If your beliefs are unshaken, you still have those beliefs, although they have been attacked or challenged. His faith that men such as the Reverend John Leale tried to do their best is unshaken. = firm