Chelsea fought back against MSK Zilina to preserve their 100 per cent record in the Champions League and ease the pressure on under-fire boss Carlo Ancelotti thanks to second-half goals from Daniel Sturridge and Florent Malouda.
Ancelotti's side had trailed to Babatounde Bello's shock 19th-minute opener for the Group F minnows but Sturridge levelled six minutes after the break.
Malouda then grabbed a vital winner for the Barclays Premier League champions when he slotted home at the far post four minutes from time to ensure Chelsea finish in top spot.
Zilina, battered by Marseille in their last Champions League outing, had arrived with an attacking mentality that gave Chelsea's youthful side something to worry about in the early stages.
Chelsea hit trouble in the 19th minute when Bello sliced his way through the home defence and coolly slotted the ball home.
Chelsea equalised in the 51st minute when Kalou's cross eluded everyone in the six-yard box apart from Sturridge at the far post, the striker slipping the ball through the legs of the Zilina keeper to make it 1-1.
In the 69th minute Sturridge curled a low shot around the post after Chelsea has superbly carved open the Zilina defence.
Patrick Van Aanholt was denied by the woodwork in the 71st minute when his thunderous 20-yard drive cannoned back off the left-hand upright.
But Chelsea ensured they maintained their 100% record in Europe when Malouda slotted home at the far post after Drogba had headed substitute Nicolas Anelka's cross into his path.