Arsenal on Thursday night advanced to the semi-finals stage of the Europa League, thanks to a lone goal from Alexandre Lacazette.
Arsenal will now be facing Spanish side, Valencia.
Napoli looked good earlier in the match with a break by Kalidou Koulibaly after 17 minutes to set up Jose Callejon in a counter attack but was stopped by Petr Cech.
Ramsey limped off after 33 minutes with Henrikh Mkhitaryan coming on for the Welsh international.
The Armenian promptly set up Lacazette who was awarded a free-kick after being brought down by Piotr Zielinski. Lacazette converted the free kick.
Emery, who is targeting his fourth Europa League trophy, will be facing his former club, Valencia for the last four match.
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