R. Prophet -- Pleads NOT GUILTY In Bloody Arrest

Ex-Nappy Roots rapper R. Prophet pled NOT GUILTY to all charges from his arrest last month ... the one where he says cops handcuffed him, tased him and beat him bloody.

Prophet previously told TMZ his arrest was "definitely racial profiling" ... he was riding in a car in Kentucky on April 20 when the driver was arrested for DUI. Prophet claims things got ugly when police asked him to step out -- and then started beating him for no reason.

Kentucky State Police saw it differently ... claiming they had to tase him multiple times for resisting arrest, and kicking the back window of a cop car.

Prophet pled not guilty to charges of public intoxication, resisting arrest, disorderly conduct, menacing, 3rd degree assault and criminal mischief. He's due back in court July 5.

Cops also said they thought the rapper was delusional during the arrest ... proclaiming himself a "prophet" -- but he says he was just screaming his name, "I'm R. Prophet!!!"