Brendan Rodger's men fell to another European defeat on Thursday, this time 3-1 away against Red Bull Salzburg, in the Europa League.
This is their tenth defeat in Europe since the Northern-Irishman took charge, however their failings on the continent haven't previosuly impeded their domestic progress, something which Lustig was keen to point out.
Speaking after the game he said: "It has been like this for the last seven years,"
"We have struggled in Europe before and then come back and played a great game domestically. Hopefully we can again."
"Historically Celtic have struggled to get points away from home," he noted. "We felt last season when we had the 3-0 [Champions League] win at Anderlecht, we could learn from that one.
"But when you get a good start like we had, you need to be a bit better with the ball, because in the first half we defended really well.
"If we had a bit more quality when we had the ball, we might have created more chances and come away with a point. But it wasn't good enough. We just have to stay together and keep going."