In a season of domestic disappointment, European competition has been the one positive for Rangers and that continued on a night of high drama at Ibrox.
The outpouring of joy that met Yandas' miss came after 120 minutes of nerves, frustration and fear as fans were put through an emotional wringer.
Rangers started well on the night, with Cerny's directness causing plenty of issues for the Fenerbahce backline, but when Szymanski swept home Filip Kostic's cross on the volley, it swung the momentum towards the visitors.
They then dominated the second half and, when Szymanski stabbed in his second on 73 minutes, there only looked like one winner.
Mourinho's side were incensed by a decision in extra-time to not award a penalty after Nicolas Raskin appeared to trip Yandas in the box. Referee Espen Eskas waved play on and VAR opted not to intervene.
Rangers stood tall defensively and rode their luck at times to take the tie to penalties and then showed character to regroup and win the shootout.
Ferguson has issues to fix, not least the dismal recent home form, but he appears to have restored a sense of togetherness and belief at the club, both among the players and fans.
He will be without both Mohamed Diomande and John Souttar for the first leg against Bilbao - they were both booked and pick up one-match suspensions as a result.
Before that though, attentions turn to Sunday's Old Firm derby against the Scottish Premiership leaders at Celtic Park, where some weary bodies will have to go again.