The Brazil defender's last-gasp free-kick earned the Blues a 2-1 first-leg advantage in their Europa League semi-final with Switzerland's Basle and now attentions turn to Swansea on Sunday and the pursuit of a top-four place.
Chelsea could be fifth by kick-off as Tottenham play tomorrow and - although the May 8 clash with Spurs could prove decisive - Luiz reckons Rafael Benitez's men cannot afford to err in their pursuit of a return to the Champions League they won in 2012.
"We need to take three points in all the games," Luiz said.
"Tottenham is one key game, but we need to keep focused for the future, now on Sunday against Swansea, because they have a very, very good team.
"You saw that in the semi-final of the Capital One Cup. We need to be focused for Sunday."
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- Rafael Benitez