Celtic boss Neil Lennon was over the moon after his side managed to hold Elfsborg to a 0-0 draw on Wednesday night.
The Hoops are now through to the play-offs to make the Champions League group stage proper after a 1-0 aggregate win over the Swedish Allsvenskan outfit with the draw taking place on Friday.
Lennon admitted it was a massive effort by Celtic to hold a dangerous Elfsborg outfit at home and said he was now looking forward to seeing who was next in their way.
"It was a huge result," said Lennon.
"It is nerve wracking at this time. I was nervous all day. It was a tough night, we showed great character.
"It was a tough game and you have to give credit to Elfsborg, they gave it everything."
He added: "We will wait to see what the draw brings. It is a step in the right direction.
"I am really pleased. It was a tough, tough night."
