All the talk in the lead-up to this semi-final meeting was around whether the Roosters could replicate Melbourne's template to silence the Manly superstar, but Trbojevic was irrepressible in a two-try, one try-assist performance in the huge 42-6 win.
Manly exploded out of the blocks with Trbojevic crossing in the right corner in the sixth minute on the back of a glut of possession.
A Roosters error coming out of yardage handed the Sea Eagles another chance with Kieran Foran backing up a Trbojevic line break from a nice pass delivered by his brother in the 13th minute.