Donald Trump might as well be the next recipient of the UFC's "BMF" belt ... 'cause Dana White gushed over No. 45's handling of this weekend's assassination attempt -- calling his close friend the "ultimate American badass."
The UFC honcho joined "The Pat McAfee Show" on Monday to share his reaction to Saturday's rally shooting in Butler, PA ... and he said he was "literally blown away" by how The Donald responded after nearly losing his life at the hands of Thomas Matthew Crooks.