The Gunners desperately needed a quick start, and they got exactly that in the 5th minute through the brilliance of Ainsley Maitland-Niles, Aaron Ramsey, and Pierre-Emerick Aubameyang - a trio that would maintain top performances throughout the match.
And with Arsenal showing more consistency following the turbulent early months of his reign after replacing Arsene Wenger, Emery feels his team are on the right track after a sixth straight home victory in all competitions. "So, for me, it will be very hard to play against them in Naples".
"After, I want to take to take better control with the ball and with possession".
Kalidou Koulibaly salutes the Napoli fans
"If you can see the quality of the football every weekend and midweek [in the Premier League], it is getting more and more competitive", said Cech, who is set to retire at the end of the season.
'It was hard for us because we had to play with 10 men for about 50 minutes of that first game as well.
"We are going to continue working next week, we are going to Dubai".More news: How do Champions League, Europa draws affect Premier League title, Top Four?
"I prefer to face them in the final".
The Rennes boss Julien Stephan told this correspondent last week after the match at Roazhon Park in deepest Brittany that his team were facing a hard evening at the Emirates in the second leg.
"Today, Inter (Milan) are out, Sevilla are out - a big surprise". Every team is now important and it's going to be very hard.More news: George Clooney Sticks Up for Meghan Markle Once Again
Gabon worldwide Aubameyang is more used to featuring in the Champions League than Europe's second-tier competition, but his early impact with a goal and an assist was decisive for the Gunners.
"I said to the players today, I'm excited (about) this competition, but it's exciting not only for the possibility to go to the Champions League, but also because it's one title", he said.
With domestic football about to shut down for the global break, Arsenal are not due to be in action again until playing host to Newcastle on April 1.More news: Manchester United boss Solskjaer rejects Neville's remarks on priorities