sukobiti se

1. (sukobiti se s + instr.) to clash; to come into conflict
   Navijači su se sukobili sa policijom ispred stadiona. — The fans clashed with the police outside the stadium.
   Sukobio se sa šefom oko plate. — He clashed with his boss over his salary.
2. (of opinions, interests) to conflict; to collide
   Na sastanku su se sukobila dva potpuno različita mišljenja. — Two completely different opinions clashed at the meeting.

Almost always used with se: sukobiti se s kim oko čega; the imperfective is sukobljavati se.