Diouf was responding to comments made by Gerrard in his 2007 autobiography, in which he claimed that the former Senegal international was a selfish player who was not interested in helping Liverpool reach the top.
However, the 31-year-old claims that no-one is more egotistical than Gerrard, as well as pointing out that he was named by Pele as one of the greatest living footballers while Gerrard was not.
"What he said is only of interest to him. All I worried about was the Senegal team, I took them to the World Cup quarter-finals in 2002," said Diouf.
"I was in Pele's 100 players of the century. Not him. I respect him as a footballer, but there is nobody more egotistical than him.
"He does not care about others. I spoke to the major figures at Liverpool and nobody can stand him. And I am not talking about [Jamie] Carragher."
Diouf spent two years at Anfield between 2002 and 2004, during which time he scored just six goals in 79 appearances.