Usage patterns
〈事〉に勇気が要るit takes courage to do something
It takes courage to start something new.
〈人〉に勇気を与えるto give someone courage
Those words gave me courage.
勇気が湧くcourage wells up (in someone)
Hearing his words, I felt courage welling up inside me.
勇気を試されるto have one's courage tested
This challenge put his courage to the test.
Expressions
勇気を出すsummon courage; be brave; pluck up courage 勇気を奮い起こすmuster up courage; pluck up courage; screw up one's courage