Away win not enough for holders Atletico
Defending champion Atletico Madrid crashed out of the Europa League despite a 1-0 away win in the second leg of its last-32 tie with Rubin Kazan at the Luzhniki Stadium in Moscow.
A goal by Radamel Falcao in the 84th minute gave the visitors hope of overturning the two-goal deficit from the first leg at the Vicente Calderon last week.
Yet despite playing with a man extra in the final minutes after Rubin captain Cesar Navas was sent off, the Spanish side was unable to score again.
Inter progressed courtesy of a 5-0 aggregate win over Romanian side Cluj.
Cluj was forced to play the closing minutes with 10 men following Mario Camora's dismissal.
Viktoria Plzen beat Serie A title hopeful Napoli for the second time in a week to book a place in the last 16 of the Europa League for the first time.
Plzen cantered to a 3-0 win in Naples last week and they completed a professional performance over two legs with a 2-0 victory tonight thanks to strikes by Jan Kovarik and Stanislav Tecl.
Next up for Plzen is Fenerbahce, for whom Cristian Baroni's first-half penalty was enough see off 10-man BATE Borisov 1-0. With the scores goalless after the first leg, BATE's hopes were hit by the dismissal of Dmitri Baga, while Cristian's spot kick was enough to see Fener scrape through.
Shola Ameobi fired Newcastle through from the penalty spot as the Magpies did just enough to see off Metalist Kharkiv in Ukraine.
Ameobi's 15th European goal came after midfielder Moussa Sissoko had been tripped by goalkeeper Olexandr Goryainov and secured a 1-0 aggregate win after the first leg at St. James' Park had ended goalless.
Anzhi Makhachkala set up a last 16 tie with Newcastle with a 1-1 draw at Hannover.
Trailing 3-1 from the first leg, Hannover threw everything they had at the Russians but only had Sergio Pinto's 70th-minute goal to show for it as Anzhi squeaked through. Lacina Traore scored in the 99th minute to kill off the tie.
Candreva side-footed the hosts in front inside 10 minutes and Gonzalez's goal shortly after the half hour was enough to seal a routine win.
Benfica saw off Bayer Leverkusen 3-1 on aggregate in their encounter in Portugal.
Benfica held a 1-0 lead from the first leg in Germany thanks to Oscar Cardozo's goal, and their lead was doubled when Ola John found the net after an hour.
Andre Schurrle equalized for Leverkusen on the night with 15 minutes to go, but Benfica restored their two-goal cushion two minutes later through Nemanja Matic.
Benfica next plays Bordeaux, which progressed after a 2-1 aggregate win over Dynamo Kiev. A solitary goal by Cheick Diabate shortly before halftime was enough to guide Bordeaux through after the first leg in Ukraine ended 1-1.
Stuttgart eased into the last 16 with a 2-0 victory at Genk.
Steaua Bucharest sent Ajax crashing out after prevailing in a penalty shootout to set up a last 16 clash with Chelsea.
Ajax won the first leg 2-0 but Iasmin Latovlevici's first-half goal put Steaua ahead on the night and Vlad Chiriches struck from long range to force extra time.
Following a goalless extra-time period, Latovlevici netted the winning penalty after Lasse Schone and Niklas Moisander had missed for Ajax.
Basel is also safely into the next stage after a 3-1 aggregate win at Dnipro. In an entertaining match, both teams netted late penalties and finished with 10 men but it was the Swiss visitors celebrating at the end of a 1-1 stalemate.
Trailing 2-0 from the first leg, Dnipro's hopes took a further nosedive when substitute Nikola Kalinic was sent off in the 63rd minute.
The hosts were handed a lifeline 14 minutes from time when Basel midfielder Fabian Frei handled inside the area, earning him an early bath and the home side a penalty from which Yevhen Seleznyov scored.
But five minutes later, Basel's 10 men won a penalty of their own and Fabian Schar converted an away goal that killed off the tie.
Levante is through to a tie with Rubin Kazan after a 1-0 win at Olympiacos.
The Spanish side held a 3-0 lead after the first leg and duly wrapped up a 4-0 aggregate win thanks to Obafemi Martins' early strike.