Diouf, who played for the Reds from 2002 to 2004 before moving on in 2005 after a loan spell at Bolton, was heavily criticised in Gerrard's upcoming book My Story, with the former Liverpool captain claiming that he had no respect for his former Anfield teammate.
Liverpool spent around £12m on Diouf in 2002, according to talkSPORT, but the Senegal star failed to live up to the hype at Anfield and was often embroiled in controversy during his spell with the 18-time English champions.
Diouf eventually moved to a string of other clubs, such as Sunderland, Leeds, Doncaster and Blackburn as well as a short stint at Rangers, and Gerrard was not shy of sticking the boot in in his his book, which is currently being serialised by the Daily Mail.
Gerrard wrote: “It seemed to me that Diouf had no real interest in football and that he cared nothing about Liverpool. For example, the way he spat a huge globule of gunky phlegm at a Celtic fan in a UEFA Cup match at Parkhead in March 2003 summed up his contemptuous and spiteful demeanour.
“A few people have since asked me if I saw any comparison between Diouf and Mario Balotelli - and I’ve always said no. I’ve got respect for Balotelli; I’ve got none for Diouf."
And a clearly irritated Diouf has hit back at his former captain and claimed Gerrard is just jealous of the acclaim that he is afforded throughout football.
Diouf finished his career in England with just one League Cup medal (a final Gerrard also played and scored in) compared to the LA Galaxy star's haul of two FA Cups, three League Cups and a Uefa Cup and the Champions League, but the African stated that he is more decorated than his ex-teammate when speaking to a Senagalese radio station.
He told Radio Futurs Medias during an interview on Tuesday, as reported by Le 10 Sport: "Gerrard is just jealous. What I have done in football, he did not. When I came to Liverpool, I came up with the status of boss and he lives there.
"I am respected in world football, the greatest football experts have appointed me among the seven best players in the World Cup, the top 100 players of the century. Several big players do not belong.
"Everywhere I go out of my country, they worship me. [Gerrard], wherever he goes outside his city of Liverpool, will be insulted."
Seconds out...round two...