"There were bodies littered all over the field at times. It was a really good, competitive match and it was superb preparation for the Heineken Cup final clash with Northampton Saints," said Schmidt.
"Brian came off with a knee problem that was uncomfortable rather than unplayable. We'll have to see how it settles down over the weekend and then assess him, and the others, on Monday.
"It's not ideal because we want to have a good week of training ahead of the game against Saints."
As well as O'Driscoll, Schmidt saw Irish international prop Mike Ross leave with a stinger injury to his left shoulder, scrum half Isaac Boss come off with a hamstring strain and hooker Richardt Strauss limp away with a bruised hip. Man of the Match Sean O'Brien also had to have four stitches in a cut above his left eye.
O'Driscoll started the game with his right knee heavily strapped and he didn't emerge for the second half after reaching half-time. Leinster will meet the winners of the second Magners League semi-finals, between Munster and reigning champions the Ospreys, in Limerick on Saturday in the Grand Final on 28 May.