Maybe the first time was a fluke, but this is the SECOND TIME Lelouch has looked DIRECTLY at Rolo with his geass!eye and Rolo hasn't been affected. WTF? Did Lelouch use his geass on Rolo already? I can't fathom what it could be for, since Rolo is already so devoted to him...
(no subject)
But Rolo can activate his geass as soon as he wants to. So his geass activated first.
In that scene, the red light (geass) flows from Rolo's side to Rai's side, which means Rai didn't have a chance to say his order before Rolo froze him.