Watch Poland vs Bulgaria Live Streaming
Watch Poland vs Bulgaria Live StreamingEdu - who had an earlier effort disallowed within seconds of replacing the injured Lee McCulloch - claimed the decisive goal deep into injury time and Smith admits he was resigned to taking a point from the famous fixture by that stage in the game.
"I thought we weren't going to get the goal," he said.
"I thought we played very well in the second half of the game but we struggled a bit in the first half of the match and our possession of the ball wasn't good.
"I was delighted that we got the goal in the end.
"Celtic have got good forward players and we were going to have to do well to overcome that.
"They have been criticised for their defending but I thought they defended very well, especially in the second half of the game when we maybe had a bit more of the ball than we did in the first half.
"The main thing for us was that we managed to win the game and that's what we did."
