The Hoops smashed through the 100-goal barrier in the league with a 5-0 thrashing of Partick Thistle at Firhill on Thursday.
A Leigh Griffiths penalty opened the scoring before Australian international Tom Rogic slid in a second and Roberts' stunning strike made it 3-0 before half-time.
Callum McGregor and Roberts then added to the score-line in the last 10 minutes to help Celtic move on to 104 goals — just one short of the record 105 they amassed in season 2003-04.
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The champions, who are one game away from ending the season undefeated, also equalled their record points haul of 103 set in 2001-02, and a win against Hearts in Sunday's season finale would see them set a new club record for number of league wins in a campaign.
"If you go through 38 games of a season unbeaten — with the level of games we've had — and perform like we've done then it's a truly remarkable achievement relative to the time that we're playing in," said Rodgers, whose side are 30 points clear of Aberdeen at the top of the table. "We go in with a big concentration for the game on Sunday. We will look to perform with the same focus, perform as well as we have done tonight and if we can do that then it puts in with a great chance of winning."
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