Lulay suffered the injury early the first quarter and did not return after taking a hit from Alouettes defensive end John Bowman after releasing the football.
The 34-year-old BC pivot had completed one of two pass attempts for a 41-yard completion to Bryan Burnham, though the drive would end in a touchdown when replacement Jonathon Jennings connected with Burnham in the end zone.
Lulay was later spotted on the sideline with his left shoulder, the non-throwing one, heavily wrapped.
Jennings came on in relief and led the Lions to their first road win of the 2018 season, moving them into a playoff spot ahead of the Winnipeg Blue Bombers — though the two teams are tied in points — by virtue of their winning percentage.
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