Brendan Rodgers urged Celtic fans to "stay calm" after his first game as manager ended in defeat against part-timers Lincoln Red Imps in Gibraltar.
Rodgers' side laboured in the heat and on the plastic pitch during a goalless first 45 minutes at Victoria Stadium before being stunned by Lee Casciaro's strike two minutes after the break.
But despite the humiliating defeat, former Liverpool boss Rodgers is confident of overturning the result at Parkhead.
Rodgers said: ''There is no embarrassment. It was a tough game in tough conditions. We didn't take our chances, they took their chance.
"We have seen enough to see that we can get through in the second leg. Of course you are disappointed to lose.
"Celtic fans expect us to get through into the group stages. The message to them is to stay calm. This is a good group of players, they are working hard and in a week's time we will need (the fans).
"I always thought this qualification phase would be based on the second leg at home, so we will need that support and hopefully get the job done next week."
Casciaro, who back in 2015 at Hampden Park scored Gibraltar's first competitive international goal against Scotland, was asked if Rodgers should be embarrassed by the defeat and said: "No not really.
"They have only been training for the past two or three weeks, pre-season, we've been training close to two months already," the 34-year-old Ministry of Defence policeman told BBC Radio Five Live.
"The weather benefited us and the pitch benefited us because they are not used to playing on an artificial pitch.
"We have got another 90 minutes to go and we will see if we can inflict more wounds on Celtic. We have just got to enjoy ourselves and we will see what happens."
Casciaro said he was looking forward to playing the second leg at Celtic Park on July 20.
"It is an historic pitch but we've got to enjoy ourselves as this doesn't happen very often for us. We've got to enjoy every moment, especially on these occasions."
Following the victory Casciaro admitted beating Celtic had been a dream result for the team of part-timers.
"It is an amazing night. It is a great story. I will never forget this.
"This is something people dream about. This result is a remarkable thing for football.
"We have only been in UEFA for three years and so to get this win against Celtic, a big club, is something we will cherish for the rest of our lives.
"We knew they would press us and leave gaps at the back. So any loose ball or defensive lapse would mean I would get a chance. Lucky enough I scored.
"I have been lucky enough to score at Hampden Park so if I could score at Celtic it would be unimaginable.
"This goal means more because we won. We lost 6-1 to Scotland so scoring that day wasn't beneficial for me. Scoring against Celtic and winning is the main aim of football
"The second leg will be harder and quicker. The weather will benefit them and we are not used to playing on grass pitches. But we will see what we can do."
Source: PA-WIRE
