The Uruguyan, who was denied a penalty in last weekend's defeat to Manchester United, should have been awarded a spot kick during Saturday's 5-2 win at Norwich City following Leon Barnett's clear foul.
"There is that fear," Rodgers said. "I could tell you about three or four strikers who go down in the box with very minimal contact, and all of them have had penalties this year.
"Everyone in the ground saw it was a penalty. Apart from the referee.
"I can't worry too much about it. It's something that hopefully the referees, when they analyse and assess their own performance, will have a look at."
Despite having his penalty appeals turned down, Suarez went on to score a hat-trick against the Canaries.