A superhero security guard fought off a pair of masked punks trying to rob a hip SoHo boutique Monday — with the wild scuffle caught on dramatic surveillance video. Tyrell Gibbs, 34, told The Post he was working the door at the trendy luxury resale shop Rebelonging for fewer than than two weeks when the brazen crime unfolded — and led him to tap into his boyhood experience as a tight end and receiver on the football field to shut down the illegal rush.