。
If you did such a thing, you'd probably be severely criticized.
Literal
By-chance such things [object-を] do-[conditional-たら] you [topic-は] harsh criticism [object-を] will-receive [probably-だろう].
非難を受ける ('to receive criticism') is a set collocation: 受ける as the 'receive' verb of passive-feeling experiences. ひどい ('harsh, severe') modifies 非難. Another way to express the same idea would be the passive 非難される ('be criticized'), but 受ける makes the criticism an object that's 'taken.'