に[反「はん」]して/に[反「はん」]し/に[反「はん」]する/に[反「はん」]した => In contrast to A N2
Contrast,Surprise
... 反対に => on the contrary N3
Compare
反面 => while, although; on the other hand~ N2
に反して => against; contrary to; in contrast to ~ N2
…と (は) はんたい (反対)に => opposition; resistance; antagonism; objection; dissent N3
Compare
~はめになる(~羽目になる)     => to get stuck with (some job); to end up with (something unpleasant) N1