With the title race going down to the wire, Jurgen Klopp's second-placed team faces Newcastle on Sunday (AEST) looking to return to the top of the table.
Benitez, who led Liverpool to Champions League and FA Cup triumphs during six years at the helm, said his side had no plans to help his former club.
"We will do what we have done the whole season and that's try to win the game," he said. "We play at home in front of our own fans and we will try to do our best. We will be professionals.
"You have to remember that all the teams have 38 games to do what they want to do.
"It's my responsibility to look after Newcastle and if I was on the other side I would be expecting the opposition to do their best and the manager to try his best."
Newcastle is 13th in the table and has secured its Premier League status for next season.
Liverpool is a point adrift of leader Manchester City, which hosts Leicester City in its next game on Tuesday (AEST).