Liel Abada made it 2-0 to Celtic after winning a header at the back post. The winger capitalised after Jamie Macdonald could only party a shot from Jota.
The Portuguese winger cut in from the left and struck a fierce, swerving drive but the Raith Rogers goalie managed to claw it away only for Abada to follow up.
Pictures from Premier Sports.
Earlier, Jota had given Celtic the lead thanks to a tidy finish after an excellent assist from James McCarthy. It has been hard work so far but Ange will be happy that his side have stuck to their task and have the visitors from Fife where they want them for the second period.