Chalk up ANOTHER victory for Scottie Pippen ... TMZ has learned the retired NBA superstar will NOT be prosecuted for kicking a guy's ass outside of a Malibu sushi joint back in June.

The L.A. County D.A. determined there was simply not enough evidence to prove Scottie did anything wrong during a confrontation with 49-year-old Camran Shafighi outside of Nobu on June 23.

According to official documents obtained by TMZ Pippen -- who's now represented by mega-attorney Mark Geragos -- admitted pushing and spitting at Shafighi but officials determined it was impossible to tell if Pippen was the aggressor or if he was acting in self-defense.

Plus officials concluded the victim was FAKING multiple injuries -- and even faked seizures -- in an effort to make Pippen look like the bad guy.

According to the document doctors believe Shafighi's injuries were minor at best and included a cut to his lip and a bruised chin.