The Rossoneri were lucky to get a 2-2 draw as Filippo Inzaghi levelled the score in injury-time.
“Their performance did not surprise me. Portsmouth often play like this at home,” said Ancelotti. “And I think they can still go through to the third round in the Uefa Cup with us.
“Ronaldinho’s free-kick changed the face of the game but we almost lost hope. The reaction had to be good and it was, but you don’t often get the opportunity from 2-0 down.
“We were a little lucky. We played quite well in the first half but it became a bit more difficult in the second half after they took the lead.”