Lionel Messi scored twice as Barcelona won 2-0 at Celtic to seal qualification for the Champions League last 16 as Group C winners.
Barca's victory in Glasgow coupled with Manchester City's draw against Borussia Monchengladbach means they cannot be caught with a game still to play.
The visitors made five changes after their poor draw against Malaga last time out, with Messi returning from illness and strike partner Luis Suarez back following suspension.