Merab Dvalishvili Usman Nurmagomedov

Merab Dvalishvili was jumped by Usman Nurmagomedov and several other men during a media session in Abu Dhabi, leaving the former UFC champion bloodied and bruised ... and the violent brawl was captured on video.

The chaotic scene went down in a hotel lobby where Merab was in the middle of an interview promoting this weekend's Real American Freestyle card when Usman and crew (MD says Umar Nurmagomedov was also there) rolled up behind the Georgian fighter and started swinging on him, punches, kicks, and all.

Dvalishvili wasn't alone -- he had a young wrestling buddy with him -- but they were outnumbered, and despite fighting back, they were banged up pretty bad, walking away with multiple cuts and bruises.