Chelsea becomes first defending champion to enter competition at the Group Stage . But despite Barca fielding a relatively inexperienced side , Benfica was unable to find a way through and must now settle for the Europa League . Arsenal scores a 1 - 0 at Shakhtar Stadium to secure its place in next round . Celtic defeats Spartak Moscow 2 - 1 to claim second spot in Group G. Lionel ##lo fails to score and leaves field with injury during Barcelona 's draw with Benfica .
Chelsea becomes first defending champion to enter competition at the Group Stage . Arsenal scores a 1 - 0 at Shakhtar Stadium to secure its place in next round . Celtic defeats Spartak Moscow 2 - 1 to claim second spot in Group G. Lionel ##lo fails to score and leaves field with injury during Barcelona 's draw with Benfica .