The actor will shoot Wednesday with the show's judges - Anu Malik, Salim Merchant and Sunidhi Chauhan - and contestants for the special episode, said a source.
The episode featuring Abhishek will be aired next week.
In Raavan, releasing June 18, Abhishek plays the negative role of Beeran and has teamed up with wife Aishwarya Rai and southern star Vikram. The film also stars Ravi Kishan and Govinda.
Earlier, Abhishek appeared on Colors' daily show "Balika Vadhu" to promote his film "Drona", which bombed at the box office.
Before Abhishek, "Indian Idol 5" became a promotion platform for "Badmaash Company", "Housefull" and "Raajneeti".