Arsene Wenger feels Arsenal can take great strength from their 3-2 Champions League victory in Standard Liege, where man-of-the-moment Eduardo completed a remarkable comeback with a late winner.
The Croatia striker was available for last night's Group H opener in Belgium only because his club successfully appealed against a two-match ban imposed for diving against Celtic in the second leg of the qualifying tie.
It was the Brazil-born marksman who had the final word when he stabbed home a corner as the Gunners completed a remarkable comeback, having trailed 2-0 inside five minutes.
"It is always inevitable with Eduardo," reflected the Arsenal manager.
"He was caught out on the first goal, but he is a guy who can always turn up on crosses - because he has that anticipation."
The result will boost morale following two successive defeats in the Barclays Premier League to Manchester United and then City last weekend.
"When you are at a big club, you cannot afford to have too many defeats on the trot," said Wenger.
"It was important to respond, after being 2-0 down. This will strengthen belief within the camp."
It had, though, not looked good early on at the packed Stade Maurice Dufrasne.
Eduardo failed to clear a corner, and Eliaquim Mangala fired in low strike past rookie goalkeeper Vito Mannone - making his Champions League debut.
Almost immediately, Serbian Milan Jovanovic netted from the penalty spot after he was adjudged to have been brought down by William Gallas.
However, Arsenal fought back with a well-taken goal from Nicklas Bendtner on the stroke of half-time.
Belgian international Thomas Vermaelen bundled in a second-half equaliser, at which Liege complained Alex Song was offside and also handled.
Eduardo then completed the turnaround for the injury-hit Gunners - who were without both first-choice goalkeeper Manuel Almunia and forward Robin van Persie - when he netted from close range.
"We were caught cold by a team who were really ready and started out of the blocks at full power," said Wenger.
"To win away from home in the Champions League and score three goals, you know it will be tough.
"You are in a position where you have to attack with full power, without restriction, and know that the next goal will kill you.
"We could not afford to concede a third goal but had to try to come back to 2-1 at least before half-time - which is what we did.
"In the second half, the game dropped a bit in physical intensity.
"When they got tired, we got some set-pieces and took advantage.
"Standard gave absolutely everything. They played like a cup final with full commitment - and they deserve a lot of credit."
The Arsenal manager did not get a good view of the match's two controversial incidents, the first-half penalty and Vermaelen's equaliser.
"The penalty looked harsh, but I have not seen it again," he said.
"As for our equaliser, it was impossible to see from the bench."
Standard coach Laszlo Boloni lamented the way his men sat back after a fine start - but felt Arsenal were more than fortunate in their equaliser.
"Arsenal had good help from the referee at their second goal - two players were offside, and there was also a handball," he said.
"This was the moment when they got more motivation and we lost ours, but the biggest problem was we have to play better."Reuse content