Benitez's Napoli meet Wenger's Arsenal in the Champions League group stage on Tuesday in a clash which pits two of Europe's most in-form sides against each other.
|16/1||Arsenal are 16/1 with BetVictor to beat Napoli 3-1
"Against Borussia Dortmund we attacked from the first minute, but tomorrow we will have to contain the euphoria because we face a very strong team at the top of the Premier League.
"We have to show our character and our strength, having respect for the opponent, but without fear."
Former Real Madrid duo Gonzalo Higuain and Raul Albiol are both fitness doubts for the visit to the Emirates Stadium and Benitez admits he will have to monitor both until the last minute.
"We have to see how they train in order to understand how they are and see if they are available," he added. "I still do not know who will play."
Benitez is also determined to keep his feet on the ground, despite Napoli's blistering start to the season which has seen them win five of their six Serie A games.
"We look from game to game," he insisted. "We have a good number of players, if we avoid injuries we can do well in all competitions."