Petr Cech: Did brilliantly to tip over Oscar Cardozo's looping volley but could do little to stop the striker's bullet penalty. 8/10.
Cesar Azpilicueta: Silly decision to leave his arm out-stretched in the box, giving the referee no option but to award Benfica their penalty. 6.
Branislav Ivanovic: The least calm of Chelsea's two centre-backs, but excelled at the other end, heading in the winner expertly in injury time. 8.
Gary Cahill: Recovered from a nervous start to lead Chelsea's back four admirably. Always calm under pressure and did just enough to stop Cardozo scoring in the first half. 8.
Ashley Cole: Put in a crucial block to stop Eduardo Salvio after 11 minutes, but otherwise had a relatively quiet night. 7.
David Luiz: Did not take to his midfield role as well as he has done in recent weeks. Passing awry early on. 6.
Frank Lampard: Rattled the bar with three minutes to go and also drew a world-class save from Artur in the first half. 8.
Ramires: Failed to live up to expectations against his old club. Was lucky not to see red after a string of rash challenges, his passing was poor and he was caught offside several times. 6.
Oscar: Chelsea's biggest threat going forward in the first half. Game tarnished by a booking for pulling back on Enzo Perez. 7.
Juan Mata: Two assists from the ever-reliable Spaniard. 7.
Fernando Torres: Superb finish to put Chelsea ahead. Worked hard throughout the game, but spent a lot of time with his back to goal. 8.