The Spaniard acknowledges that the Moscow giants will find it tough to get a good result on Wednesday, but is nonetheless determined to find a way to outwit the Blaugrana
Even though the trainer understands the difficulty of the task at hand, he believes there are ways to defeat the Catalans, and is determined to leave the Camp Nou victorious this week.
"When you take on Barcelona, you have to call on divine intervention or luck to beat them. But there are teams that have managed to defeat them," Emery told Marca.
"So there are certainly ways to win against Barca. We all try to achieve it, but only the few chosen ones indeed beat them. We are working to become one of them."
Emery then went on to praise Lionel Messi, and stressed that the Argentine always seems to be in fine form.
"Whenever Messi is on top of his game, which always appears to be the case, he makes the difference and can decide a game all by himself."
Messi has already netted 61 goals in 2012, and will be looking to add to his tally against Spartak.