The Hoops will clinch a third successive league title if they beat Partick at Firhill.
However, Lennon has warned his players not to expect an easy match against the strugglers.
"They have their own self-pride and pride in their club. And they have an agenda - to avoid second-bottom place," he is quoted as saying by BBC Sport.
"They're fighting for their lives so it's not a foregone conclusion that the title will be wrapped up this week."
Celtic have won their last three matches in the Scottish Premiership.