The Parkhead fut coins men resumed control when the second half started and Juve found themselves struggling to get out of their own half but attacks were breaking down at the edge of the visitors penalty area.
Full-back Adam Matthews was a straight replacement for Lustig on the hour mark. Three minutes later Ambrose had a great chance to level when Charlie Mulgrew, after taking a short corner from Commons, planted a cross right on to his head but his weak header from eight yards went straight into the arms of the grateful Buffon.