The visitors lost 2-0 last night.
"We need to reflect on this result and also forget it, because it burns us and was only decided by a corner kick," said Hamsik.
"We had not come here looking for a draw, but you cannot give Juventus certain opportunities like that.
"We had done well in defence, but didn't create many chances and to be fair neither did Juve. It was difficult to mark Andrea Pirlo, but we could've done more up front. We didn't go on the counter as dangerously as we usually do.