The result sees Inter dumped to the Europa League.
“We failed to score in the second half, although we had the chances. We knew Barcelona were dangerous on the counter, we got stretched out and it would get tougher as time wore on," the captain told Sky Sport Italia.
“We gave our all, now we have to move forward. It is a defeat that hurts, but it's not as if our season ends here. We have two Serie A games before the Christmas break, then can recharge our batteries."
He added: “Our performances in the group games showed we deserved to go through, but unfortunately we had some ups and downs during the same match."