FC Basel's Mohamed Salah challenges Chelsea's John Terry during their Europa League semi-final first leg soccer match at St. Jakob Park stadium in Basel April 25, 2013 (Photo: Reuters)
Luiz deceived goalkeeper Yann Sommer with a free kick in the fourth minute of stoppage time after Basel defender Fabian Schaer scored a disputed 87th-minute penalty.
Chelsea, the Champions League winner seeking back-to-back European trophies, led in the 12th minute from a Victor Moses header.
Fenerbahce, which has never reached a European competition final, won 1-0 at home to Benfica through defender Egemen Korkmaz's 72nd-minute header.
After a German goal rush in the Champions League semifinals, the Europa League contenders were all denied by the woodwork.
Fenerbahce struck the post three times, including midfielder Cristian's penalty in first-half stoppage time.
Return matches are next Thursday.
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