Celtics minus Allen and Rondo; 3 bench players
Boston coach Doc Rivers delivered the news about an hour before the game.
Allen jammed his left ankle in the second quarter of Sunday's win at Washington and didn't return.
Starting point guard Rondo will be missing his third straight after taking a hard fall and bruising his right wrist last Wednesday.
Rondo was sitting in the middle of Boston's locker room, watching tape of the Magic and said he felt ''much better'' with wrist wrapped in ice.
He said it was up to the training staff about 15 minutes before Rivers said he was out.
Rivers also said Pietrus hurt his shoulder in Sunday's win and it bothered him when he came to shootaround Monday morning.
''I'd be surprised if (Rondo and Dooling) don't play Thursday,'' Rivers said.
The teams meet again in Orlando.
''He had trouble lifting his hand above his shoulder to shoot,'' he said.