A$AP Rocky claims he never laid a finger on the ex-fan who’s accusing him of smacking her up at a concert — instead, he’s hinting she might have been roughed up by other fans … and should have expected it.

Lisa-marie Wade sued Rocky for $75K … saying he smacked her in a brutal, unprovoked attack while making his way through the crowd at a Philly music festival last year.

Rocky just fired back in legal documents … denying he ever touched or attempted to hit Wade. He says a pack of fans “aggressively moved towards” — insinuating Wade may have been part of that mob scene. But he adds neither he nor his entourage smacked her.

He says Wade knew there could be trouble in such a crowded setting. In other words … expect some heat when you walk in the kitchen.

Rocky wants the lawsuit thrown out … A$AP.