Wiktionary
knights in shining armour
n. (knight in shining armour English)
Usage examples of "knights in shining armour".
There were dragons to be slain, captured princesses to be saved, and mighty deeds were accomplished by knights in shining armour.
He felt he had had enough of being the lone hero that day to last him for years - so that his private dreams of acting solitary bold knights in shining armour would never be quite the same again.
Most of this samurai stuff is a myth, like the Wild West bunk the Americans are brought up on, or your knights in shining armour at King Arthur's court.