Celtic beat Utrecht 4-2 at Parkhead to earn a place in February's Europa League play-offs.
The Scottish Premiership champions did the job early as Martin O'Neill's side went 3-0 up inside only 19 minutes thanks to strikes from Benjamin Nygren, a Nick Viergever own goal and an Arne Engels penalty, the club's earliest-ever three-goal lead in a major European game.
The opener came after a well-worked goal following a short corner as Kieran Tierney got to the byline and pulled the ball back for Nygren to score from close range, the Swede's 14th goal of the campaign.
The hosts soon doubled their lead after a catalogue of errors at the back from Utrecht. Former Celtic goalkeeper Vasilis Barkas's under-hit pass was intercepted by Nygren, whose low ball into the box was turned into his own net by the unfortunate Nick Viergever as the visitor's skipper stretched to intercept.
It then went from bad to worse for the Eredivisie side when Dani de Wit was harshly adjudged to have handled Auston Trusty's close-range header from a corner, with Engels doing the rest from the spot.
However, Celtic lost their way before half-time, perhaps thinking the game was over, with De Wit sweeping home from the edge of the box - and when Adrian Blake also found the net from distance after a swift counter just past the hour mark, home nerves began to jangle.
Not for long, though, with the hosts, who ended up in 21st place in the standings, soon restoring their two-goal cushion as Trusty rose highest in the six-yard box to nod home Engels's inviting ball in from a corner to confirm their place in the play-offs on February 19 and 26.
Friday's draw will confirm their opponents - either Stuttgart or Robbie Keane's Ferencvaros.
The key numbers from Parkhead
McGregor: Under pressure, we delivered results
Celtic captain Callum McGregor to TNT Sports:
"We knew the objective tonight was to win the game. The pressure was on us to get through and overall, it was a decent campaign.
"There were one or two games that put us up against it, but when the pressure was on, we delivered results and it was a very good performance.
"The mentality in the group has been amazing over Martin's first and second time [this season].
"The boys were hungry to dig ourselves out of the hole we were in and you can see that again. There's a calmness and confidence in what we're trying to do, even when it gets to 3-2... but for the first 25 to 30 minutes, we were really good.
"We trust the club to get the players the manager and the staff wants, but the players that are here are working ever so hard and we're all together.
"In every window, we want to strengthen the club and the team so the players welcome that as well."