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"You got a cast on, bitch -- you lucky!!"

Jorge Masvidal and Kamaru Usman almost got into an all-out brawl on radio row at the Super Bowl in Miami ... and video of their heated confrontation is EPIC!!!

The near-fight all started with some friendly trash talk ... but things got more serious when Usman begged Masvidal -- repeatedly -- to "do something!"

Masvidal seemed to be down for the scrap ... but he told Usman he wasn't going to hit him because of a cast Kamaru apparently had somewhere on his body.

"That's the only reason why nothing's happening to you!" Jorge said.

The two were ultimately separated by their entourages ... but it begs the question, is this the next fight for the two UFC superstars?!?!

Neither has an opponent lined up for their next tilt ... and Dana White himself told us earlier this month that would be "an incredible fight."

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After seeing the two in Miami on Wednesday ... we gotta agree. MAKE IT HAPPEN!!!