Rogic was replaced soon after on the hour mark. "I didn't expect that".
"It takes a lot of personality and courage to take that kind of penalty but he was obviously confident that he was going to score". Well, maybe so, and it still generates its energy and noise, but Celtic have reduced it to a playful game of cat-and-mouse.
'You could see in the early stages we were losing possession too easily and just giving them a chance.
Even from the earliest moments, Celtic looked in the mood to dismantle opponents that appeared in precisely the fragile, feckless state to be unable to prevent them doing so. When you play for Celtic or manage Celtic the expectations are huge.
Rodgers, meanwhile, said: "I think what the players have done over the past couple of seasons has inspired the supporters into believing the impossible".
Tom Rogic opened the scoring after 22 minutes with Callum McGregor getting in on the act 15 minutes later.
Rodgers' opposite number Graeme Murty told Sky Sports the sending-off of Ross McCrorie for a pull on Dembele tarnished the visitors' hopes of turning the game around in the second half. "They turn out in their numbers, the people watching today will be disgusted in the performance we put in and so they should be because it was a very, very poor performance".
It hasn't been all flawless for them however, Celtic's Champions League campaign was disastrous as they recorded just one win in six games and subsequently went on to compete in the Europa League where they lost to Red Bull Leipzig. "We train every single day and the energy levels are there but we were second best in nearly everything today - second balls, first balls, it was just unacceptable for Rangers".