My friend is going to get jumped what should he do?? (might get shot)

Okay so my friend is going to most likely get jumped. On friday after a party there was a fight between person A and B person B got fucked up. Now person B's older brother who is 23 and has been in and out of jail for a few years and is with SEVEN other guys is looking for person A and my friend person C. My firend literally did not do anything and has tryed to talk to them but they wont buy it. Today after school they waited for my friend but he left early to avoid them. He cant fight seven guys and once and i think one has a gun too. What should be friend do? Hes thinking about getting a gun or telling his dad who would prolly end up in jail for fucking all the kids up. WHAT SHOULD HE DO I NEED YOUR HELP NS.