Yesterday Paula Sherriff said (quote from Hansard, emphasis mine):
We stand here, Mr Speaker, under the shield of our departed friend. Many of us in this place are subject to death threats and abuse every single day. Let me tell the Prime Minister that they often quote his words—surrender Act, betrayal, traitor—and I, for one, am sick of it. We must moderate our language, and that has to come from the Prime Minister first, so I should be interested in hearing his opinion. He should be absolutely ashamed of himself. [Applause.]
Boris Johnson has indeed referred to the European Union (Withdrawal) (No. 2) Act 2019 as the "surrender Act", and for all I know he has referred to some policy or position as being a "betrayal" (as is commonly done in politics, and unremarkable). But Sherriff's claim - made in the context of Boris's rhetoric supposedly inciting abuse against MPs - notably includes only one example of an epithet directed at an individual - the word "traitor".
Yesterday's Hansard transcript certainly contains no instance of any politician referring to another as a "traitor"; the only uses of the word are by MPs talking about how bad it is for people to be called traitors. Boris perhaps meant to deny the claim that he had used such language (though his precise meaning was unclear) by responding that it was "humbug". And, according to the Guardian, conservative MP James Cleverly explicitly denies the claim:
But the Conservative party chair, James Cleverly, defended Johnson’s comments to MPs in the Commons. He denied that the PM called opposition MPs “traitors”.
“The accusations thrown at him yesterday were deeply unfair,” Cleverly said. “He was accused of calling people traitors – he has never done that.”
Has Boris Johnson ever referred to any of his opponents, whether individually or collectively, as a "traitor" or "traitors"? Or is this part of Paula Sherriff's accusation untrue?