The midfielder volleyed home our equaliser just six minutes from time at Villa Park and that provided the platform for Harry Kane to hit the winner from a free-kick in the final minute.
"I'm pleased to score a goal that made an impact and after that, Harry scored the vital goal and I'm delighted we won the game," said Nacer.
"We had a lot of chances for 1-0 but they scored, it’s a shame but we have to be sharper in every part of the pitch and we did that in the last 30 minutes.
"I had a feeling throughout that we could score a goal at any time and at 1-1 we had the belief."
Nacer's goal leaves him joint-sixth in the Premier League goalscoring chart. "I’m happy to score the goals but I just want to play well and help the club. To take three points every week for me is most important."