The FA has sent a letter to England supporters to urge them to "act in a positive and respectful way" during the remainder of the Euro 2016 tournament.
England fans were involved in ugly clashes with Russia supporters in Marseille last week, and there is genuine fear tensions will rise in Lille on Wednesday.
Russia play Slovakia in the city on Wednesday, whilst England and Wales supporters are congregating in the French city ahead of their match in nearby Lens on Thursday.
Russia supporters attacked their English counterparts in Marseille. Credit: Nick Potts/PA
In the letter sent to England members, Martin Glenn, the FA's Chief Executive Officer, acknowledged not all fans were involved in the violence in Marseille but pleaded with fans "not to react to provocation".
He advised fans to avoid "isolated areas in Lille and Lens" and "continue to respect our hosts in France".
Extra police have been drafted in to Lille and there is a drinking ban in public places, with bars in the city closing at midnight.
Trouble flared briefly in Lille on Tuesday evening as England, Wales and Russia supporters were involved in a confrontation outside a bar near the city's train station.
