Olivia Smith completed the comeback to give Arsenal a slender 2-1 advantage over Lyon in the Women's Champions League semi-finals.
Jule Brand had given Lyon the lead at Emirates Stadium, but a clumsy own goal was followed by Smith's persistence, which resulted in a winner with seven minutes remaining.
Arsenal started well, with Caitlin Foord dragging a shot wide early on, but Lyon caught them cold with their first real attack of the game.
Sofie Svava won the ball high upfield, and Brand skipped between the Arsenal defenders into the box before lashing her strike past Daphne van Domselaar 18 minutes in.
Mariona Caldentey and Lotte Wubben-Moy both saw chances go begging as Arsenal sought an equaliser, while Foord almost sent another effort past the target.
The Gunners improved after the break – and saw a potential penalty overturned by VAR – but it was Ingrid Engen's own goal that gave them a lifeline. The Lyon defender inadvertently bundled home after Christiane Endler spilled Mariona Caldentey's 58th-minute free-kick.
Kadidiatou Diani rattled the woodwork following a blistering counter-attack, with Korbin Shrader unable to turn in on the rebound.
And Smith punished Lyon for that miss. She chased down a loose backpass and, after a mix-up between Endler and Engen, pounced on the loose ball to slot into the empty net.
Data Debrief: Holders show their mettle
Arsenal struggled in the first half and conceded with the only shot they faced on their goal, but they improved after the break to give themselves an advantage in next weekend's second leg.
The Gunners had lost their last two home matches against Lyon, but they did not let their heads drop and instead made it five wins on the bounce in the competition at the Emirates.
Arsenal finished with 1.33 expected goals (xG) from 16 shots, with six of those on target, while Lyon managed just 0.44 xG at the other end.
And it was Smith that led the charge, with a game-high five attempts worth 0.69 xG, while her eight touches in the opposition box were only bettered by Foord (nine).
woscdipruz
0
Arteta and his team very useless.. Ur useless selection of players, negligence and nepotism have cost we the fans very ashame
woscdipruz
0
My women well done keep the good work.. I will be very glad if arsenal board sack heart breaking, disapointment, bottle every trophy every season and employ the female coach.. Rene Sleger
AceTheCreator
0
Canadian queen 🇨🇦🤩
micbdelu
0
q
keliamfavor
3
the only serious minded team. Arsenal female team
Rodcimrstu
0
uninated and Chelsea wemen were are they
eliminated
young_boss
4
No matter how hard Lyon women are, they find it difficult to win against Arsenal women
Lotcinptuy
3
uninated and Chelsea wemen were are they
jucabeknsy
1
coyg
Yohabi1
4
Be brave, girls. Defend your tittle well. Good luck.
Vuailntuyz
2
Arsenal men will always be second in everything
iamcaptain
2
the ladies go dey work well for the trophy the men go pour trophy for bottle😭😂🍾
Meocenou
1
back to back
Meocenou
1
wow
rawabrtz
2
proudly our gunner women bring it back again