Kenny Miller's first-half strike was all Rangers had to show following the first European match at Ibrox for six years as Progres Niederkorn kept themselves in it ahead of tonight's second leg.
And he feels there were plenty of signs that they can finish the job off in Luxembourg.
Caixinha told Rangers TV: "You need to get on this game like it is a final - you are drawing the game and the team that wins, wins the trophy".
Rangers' return to European football was played out in front of a packed Ibrox Stadium last week, but Light Blues supporters were left somewhat underwhelmed as their team struggled to score. Undoubtedly, the game in Luxembourg will be a little more hard for the Rangers, but I do not doubt the success of the Scottish grandee and that we will see the Rangers in the next round.More news: Oasis Petroleum Inc. (NYSE:OAS), Prudential Financial Inc (NYSE:PRU)
"On the whole, we are happy with the performance, but we know we need to step it up again next week", Jack added.
With this being one too many for the matchday squad, the Rangers boss has stated that one of the Mexican pair will drop out and watch the game from the stands, while the other will be included in some capacity. In the first round of the selection in the group stage, the Rangers, as expected, seized the advantage from the very beginning of the fight, literally settling into the opponent's penalty area.
Rangers travelled without Barrie McKay, who is in their Europa League squad but has been training with the Under-20s amid reports linking Nottingham Forest and Cardiff with potential moves for the winger.