The Partenopei coach is adamant his players can emerge victorious against any side in their Champions League group
The Partenopei are joined by Arsenal, Borussia Dortmund and Olympique Marseille as they hope to book a ticket to the last 16 of the tournament.
And Benitez, who feels BVB are the favourites to win the group, is adamant all of the teams are beatable on the back of a summer that saw 10 new players join the club.
"We have the quality to beat every team in our group - even the favourites Dortmund," the 53-year-old told reporters.
The coach went on to state that squad rotation will be a crucial factor in order to gain something in all competitions this season.
"The squad doesn't just consist of 11 players. It's impossible to get through the dense schedule without rotation."
Napoli kick off their European campaign when they host Dortmund on Wednesday.