Well, I often hear how people say that nazim is equal to fascism and stuff like that, but is there was such thing like antisemitism and other kind of repressions agains minorities in fascist Italy?
Depends, do you mean official government level or "popular" (aka "domestic" as it's called in Russia) level?
If government, depends on whether before or after alliance with Hitler?
Initially, Mussolini declared “In Italy, there will never be any anti-Semitism.” (src)
However, later, it changed drastically (1938): http://en.wikipedia.org/wiki/Manifesto_of_Race
The laws are regarded as antisemitic in nature, stripping the Jews of Italian citizenship and with it any position in the government or professions which many previously held. The manifesto demonstrated the enormous influence Adolf Hitler had over Benito Mussolini since Italy had become allied with Nazi Germany.