Spartak's boss has lavished praised on the Argentine magician ahead of his side's Champions League fixture against the Blaugrana, saying that he makes everything look natural
The Ballon d'Or nominee, who recently broke Brazil legend Pele's record for scoring the most goals during one calendar year with his 76th strike against Mallorca, is now only nine behind Gerd Muller's tally.
Having a tough meeting with Tito Vilanova's men ahead of him, Emery revealed his belief that the South American star is truly one of a kind.
"He has a special gene; it's unique." he told reporters.
"It's the essence of the game. He does everything so naturally, that, when he scores three goals in a match, it seems normal to us."
However, the Spanish coach insisted that, although they are blessed with an outstanding individual player, it is the whole team which makes Barcelona dangerous opponents.
He continued: "Barcelona are still centred around Messi, but they give a lot of importance to the group and the contribution of all the players. It's a philosophy that has marked an age, that will stay with us but won't be repeated."
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He added: "We shouldn't look to the weather to give us more of a chance. We had a good match in the away game.
"It was Messi who decided things. We have to repeat what we did there, but playing as well in defence as in attack. If we do that we'll be close to winning."
Barcelona travel to Moscow on November 20, with the Champions League clash beginning at 18.00CET.