Chelsea managed to qualify for the last four of the Champions League, but there were a few scary moments for the Stamford Bridge faithful as Javi Garcia scored late on
The victory over the Portuguese outfit sees Chelsea continue on the path towards the final in Munich, but they must first overcome the large roadblock of defending champions Barcelona.
Roberto Di Matteo opted to make two changes from the first leg triumph in Lisbon, bringing back Branislav Ivanovic and Lampard in place of Paulo Ferreira and Raul Meireles, while Michael Essien and Didier Drogba were left on the bench.
His opposite number Jorge Jesus decided to give starts to former Stamford Bridge fringe-player Nemanja Matic and former Spanish international full back Joan Capdevila, who replaced injured duo Luisao and Jardel.
Chelsea found themselves on the back foot early on in the game as Benfica looked to level the tie early on, with Nicolas Gaitan posing the threat down the left wing, but the Blues defence stood firm to protect both Petr Cech and their first leg lead.
The home side were given a golden opportunity to take the lead as Ashley Cole broke into the box and was cruelly barged down by Javi Garcia, leaving the referee with no option but to point to the spot. Damir Skomina showed a yellow card to Benfica skipper Maxi Pereira, which would cost the full back later on.
That allowed Lampard to drive the ball under the outstretched arms of Artur and into the back of the net to give Di Matteo’s side a comfortable two-goal lead on aggregate.
Midway through the first half, David Luiz attempted one trick too many and allowed Gaitan to race forward, but the Argentinian midfielder’s cross was blocked by John Terry.
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The Chelsea skipper came to the rescue again a minute later after a good move from a free kick found Axel Witsel at the back post and he knocked it down for Oscar Cardozo, who was free on the penalty spot, but his drive towards goal was cleared by Terry on the line.
Five minutes before the break, things went from bad to worse for the Portuguese outfit as Pereira was shown his second yellow card of the evening for a lunge on John Obi Mikel, leaving his side left to play out the rest of the match with 10 men.
The visitors came out with a purpose for the second half and were nearly rewarded straight away as a slick passing move saw the ball arrive at the feet of Cardozo, but his strike was superbly tipped round the post by Chelsea stopper Cech.
Di Matteo’s side should have wrapped up the game as they broke down the left-hand side of the penalty area, with Salomon Kalou leaving Ramires with a mere tap-in from a yard out but the Brazilian midfielder somehow failed to convert.
The English side continued to search out the goal that would ultimately kill the game off as a contest, with both Juan Mata and Torres having strikes on goal within seconds of each other, but neither could find a way past Artur.
Benfica nearly claimed a goal back as the Chelsea defence seemed to fall asleep, allowing the ball to eventually find substitute Yannick Djalo, but his striker from just inside the area was blocked by the home defence and went out for a corner.
Mata could have finished off the game Kalou picked out his bursting run into the box, but the Spanish midfielder’s strike could only go across the face of Artur’s goal and out for a goal kick.
After so many missed chances, the Stamford Bridge faithful must have feared the worst when a corner from the left wing in the 85th minute found Javi Garcia free in front of goal and he headed the ball into the back of the net to give Benfica a glimmer of hope.
But with Benfica moving everyone forward, the Blues broke and substitute Raul Meireles unleashed an unstoppable strike to send Chelsea into the semi-final stage of the Champions League.