Lionel Messi scored a brace to eliminate Celtic from European competition as Barcelona won to secure top spot in Champions League Group C.
The Argentine struck the opener from Neymar’s sumptuous pass, and only a stunning Craig Gordon save prevented Luis Suarez from heading home a second.
Moussa Dembele spurned Celtic’s best chance before Messi scored a penalty.
Though Celtic can still draw level on points with Borussia Monchengladbach in third, the German side have a superior head-to-head record.
Brendan Rodgers’ side remain on two points, having lost twice to Barca – who opened the group stage with a 7-0 win over Celtic – and at home to Gladbach.