The Bhoys are favourites to progress following Wednesday's first leg draw.
Celtic striker Moussa Dembele has taken to Twitter in the aftermath of Wednesday's 1-1 draw with Astana.
The Bhoys made the 17-hour round trip to Kazakhstan wary of another slip up, after their embarrassment at the hands of Gibraltarian side Lincoln Red Imps in the Champions League second qualifying round.
However, despite falling a goal behind to the minnows in round three, Leigh Griffiths' late strike rescued a respectable point for Brendan Rodgers' side.
Griffiths scoring against Lincoln Red Imps
It puts Celtic in the driving seat ahead of next week's return leg in Glasgow, but Dembele is not taking anything for granted.
"Important result today away from home," posted the French striker on Twitter. "Not an easy one to get but half of the job still need to get done.
"Thanks for the support."
Important result today away from home. Not an easy one to get but half of the job still need to get done ! Thanks for the support— Moussa Dembélé (@MDembele_10) July 27, 2016
Dembele became Rodgers' first signing at Parkhead earlier this summer, arriving for a cut-price fee at the end of his Fulham contract.
Celtic are thought to have landed a bargain in Dembele
The 20-year-old was making his third competitive appearance for the Bhoys in Kazakhstan, but was replaced by Nir Bitton in the 62nd minute.
Yuri Logvinenko put the hosts ahead from a corner with 18 minutes played, before Griffiths tucked home after some dogged work from Patrick Roberts on the byline.
Roberts was in fine form once more