Last weekend's scrappy 2-0 win at home to Toulouse, on a boggy pitch which may have to be re-laid, was the result of champions in waiting as they seek their first title since 1954.
"The season still has a very long way to go and we'll definitely drop some points and then gain some on our opponents," goalkeeper Mickael Landreau, who made his 500th Ligue 1 appearance against Toulouse, told reporters.
"A five-point lead can be wiped out in two matches, but that doesn't mean we are not happy to be where we are."
Lille's success this term has surprised many European pundits and bigger names such as Olympique Lyon, Olympique Marseille and Paris Saint-Germain have struggled to keep pace.
Lyon, seven adrift of Lille in joint fourth, host Nancy on Friday after being allowed to bring the kick-off forward by a day to give them more time to prepare for Tuesday's Champions League last 16 first leg at home to Real Madrid.
Champions Marseille in third welcome Saint Etienne on Saturday hoping not to take their eye off the ball and think too early about Wednesday's meeting with Manchester United.
