Giroud who scored his 100th goal for Arsenal against BATE Borisov last Thursday, becoming the 19th player in club history to hit the milestone.
The 30-year-old French striker converted a 49th-minute penalty to hand the Gunners a 4-1 lead in Belarus, giving him a century goals in 238 matches in all competitions since joining the club from Montpellier in 2012.
Giroud is the 12th-fastest Arsenal player to score 100 goals, beating Robin van Persie by one match.