Last weekend, Lambert was absent from the 18-man group to face Arsenal due to a cut knee, while Diouf sustained a knock at the Emirates Stadium and needed to be substituted.
However, ahead of the clash with Arsenal's North London rivals, Lambert appeared optimistic over the pair being in contention for the game at the bet365 Stadium.
At a press conference, the 48-year-old told reporters: "We are keeping an eye on both Kurt Zouma and Mame Diouf who we hope to have back for the weekend, but we will just have to wait and see.
"Zouma trained this morning and Diouf has a kick from Arsenal."
Stoke currently sit three points adrift of safety in the top-flight standings.