They showed 'courage under fire'. [=they were brave while they were being shot at or while they were being strongly criticized]
He has 'the courage of his convictions'. [=he is not afraid to do what he believes is right]
I finally worked/got up the 'courage' [='nerve'] to tell him the bad news.
(..) - Do you have to go? - You'll be fine, Elsa. Elsa? Please, I know you're in there. People are asking where you've been, They say have courage and I'm trying to... I'm right out here for you. Just let me in. We only have each other. It's just you and me. What are we gonna do? (..)2013 Frozen