The firefighter who rescued us was our knight in shining armor.
shining
/ˈshī-niŋ/
adjective
emitting or reflecting light
bright and often splendid in appearance : resplendent
possessing a distinguished quality : illustrious
verb
to emit rays of light
to be bright by reflection of light
to be eminent, conspicuous, or distinguished
noun phrase
a man who behaves in a very brave way
a man who is the perfect romantic partner for a woman