However, it was not to be for Benitez and his players, with the coach saying that there is plenty of time for success with the current group of men.
"This game will increase our confidence, this is the key," UEFA.com quotes Benitez as saying. "Here at Napoli we are trying to develop something and the boys showed we are on the right track. We must be proud of what we have done so far.
"We should have scored our first goal earlier in order to have more time to push. Five minutes before the final whistle it was hard to say "keep pushing" because Marseille and Dortmund were drawing 1-1 and Arsenal are dangerous on the counter and could have scored.
"In any case, the team made a tremendous effort, we deserved to win and qualification would have been well-deserved."
Napoli are currently third in Serie A, eight points behind leaders Juventus.