Leno, himself a summer signing who has become a starter for Arsenal, had plenty of praise for his team-mate's display on Sunday.
Sub Alexandre Lacazette gave Arsenal the lead again and Lucas Torreira struck a late fourth to seal the points, while Spurs were reduced to 10 men with Vertonghen sent off for a second yellow late on.
It was my first derby and the atmosphere was incredible.
"We lost the first two games against Chelsea and Manchester City but against Liverpool we played very well".
On beating one of the top six...
However, the Gunners 2-0 victory at the Emirates last season is their only win in the last eight clashes with Tottenham, drawing on four occasions and losing the other three meetings.More news: Apple Approves India’s Do Not Disturb App and Avoids iPhone Ban
"Sevilla vs. Betis is with the passion because they are two teams with very big and passionate supporters and here in England I think I am going to live Sunday the first derby and think it is similar with the passion".
"We know it will be very hard in Manchester, because of their history and their present, we are going to prepare in the best way possible, to have the best performance against them".
"I don't know if it will happen". We knew we could still do it, ' he said. In the end, it's not important because we won the game.
Coverage of today's big Premier League game between Arsenal and Tottenham will be shown live on Sky Sports Main Event (Sky channel 401, Sky HD 855, Virgin channel 511) and Sky Sports Premier League (Sky channel 402, Sky HD 856, Virgin channel 512).
So, if you want to watch all the action from a must-see North London derby then here's how to tune into a Arsenal Tottenham live stream online. "It will be hard, a big challenge for us".