The North Londoners host the FA Cup finalists at White Hart Lane on Sunday and Dawson wants the place to be pumping for the vital meeting which could restore Tottenham's Champions League hopes.
"There is no better place than White Hart Lane when it's rocking and that support can make such a difference," said Dawson.
"When the players are performing and the fans are behind us, they are our 12th man, just like they were recently against Arsenal. We'd all love a repeat of that.
"There are a lot of points to play for and we have to be positive. City have picked up their form, had great result against (Manchester) United and then in the FA Cup semi-final (over Chelsea).
"They will be full of confidence and have some great players but coming to the Lane, the place will be rocking and hopefully we'll perform well and get the right result."