The Cobblers play-off charge was checked by Aldershot who notched three times after Kevin Thornton's early sending off.
"I though we stood up to them," Dillon told the BBC after seeing his side move back above Northampton in the league.
"They are a good team and will be there or thereabouts at the end of the season.
"That was probably the best result we've had since I came to the club."