'Simon, Simon, Satan has asked to sift you as wheat.'Satan: 'Satanas' - adversary, evil spirits, name of the prince of fallen angels
In fact - Satan is against all that is good, right, pure and holy. We might assume that those who worship him trust him as a leader and yet Satans deception and hatred knows no bounds - he trusts none, loves none, cares for none...not even those who worship him. His desire is deceit - His joy is in unholy suffering - His future is set to destruction.
Jesus grabbed Simon Peters attention but proceeded to warn the whole group to beware of the evil one. The disciples had been arguing over leadership and greatness - this prideful argument gives Satan an opportunity to sift. Wheat gets sifted from the chaff. Jesus saves the wheat...the chaff is given to the adversary.
taken from Lukes Gospel chapter 22