Luiz's stoppage-time free-kick earned Chelsea a 2-1 first-leg advantage in their Europa League semi-final with Swiss side Basel.
But Champions League football remains the ultimate aim and, starting with the visit of Swansea on Sunday, Luiz feels Rafa Benitez's side should aim for maximum points from the season run-in, including a potentially crucial clash with Tottenham on 8 May.
"We need to take three points in all the games," he 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."
To add extra spice to the game, it is the first meeting between the clubs since Eden Hazard was sent off and suspended for kicking a ball boy at the Liberty Stadium in the Capital One Cup semi-final in January.
Meanwhile, Mark Clattenburg will referee a Chelsea game for the first time since last autumn's racism row involving John Obi Mikel, when the official was accused of using "inappropriate language" before being cleared by the FA.