After picking up a knee injury in the opening game of the season with Huddersfield, Zaha missed nine weeks of the campaign but has now returned to action.
The Eagles' run without Zaha led to them falling to the bottom of the Premier League although, despite their lowly position, there is a renewed air of confidence around the club since his comeback, according to Cabaye.
"Wilf is very important for us and for the club," Cabaye told Sky Sports. "He can do some things [on the pitch] that only he knows how to do. It is important to have that kind of player in the squad.
"We missed him and also Christian [Benteke] when he was injured and then since he's back he's showed everyone what he can do on the pitch.
"Hopefully he will be in a good way after last week and the game for Ivory Coast and hopefully he will play well on Saturday [against Everton]."