suprotstaviti

1. (suprotstaviti se + dat.) to oppose; to stand up to; to resist
   Suprotstavio se šefu pred svima. — He stood up to his boss in front of everyone.
   Građani su se suprotstavili novom zakonu. — Citizens opposed the new law.
2. (something to something) to counter with; to set against
   Njegovim tvrdnjama suprotstavila je jasne činjenice. — She countered his claims with clear facts.

The person or thing opposed takes the dative: suprotstaviti se vladi.