The Senegalese striker spent two seasons with Riise and Gerrard at Anfield and hit out at his former skipper following news of his retirement from professional football.
Diouf told SFR Sport.: "When I arrived, I showed him that he was nothing. I asked him, 'What great competition have you played and where do people remember you?' It wasn't [Zinedine] Zidane.
"The player, I respect him. He's a great player. But the man and the person not. I let him know.
"For me, he was a player like everyone else. He had to keep up well, and play as he knew how to do, but don't go to the coach to report what happens in the dressing room."
Diouf didn't stop there, claiming that Gerrard was intimidated by the controversial striker, who retired from the game last year, saying: "He did not look in my eyes because he was afraid. And he was afraid to speak to me.
"And when I arrived at Liverpool, it was he who asked me for my jersey, not the opposite."
And Diouf has had his fair share of words on Gerrard previously stating that other Liverpool personnel weren't fans of the Reds legend.
"There is nobody more egotistical than him.
"He does not care about others," Diouf once told the press. "I spoke to the major figures at Liverpool and nobody can stand him. And I am not talking about Carragher."
ROASTED!!!!!
Keep slippin Stevie