Allah said,

﴿خُذِ الْعَفْوَ وَأْمُرْ بِالْعُرْفِ وَأَعْرِض عَنِ الْجَـهِلِينَ - وَإِمَّا يَنَزَغَنَّكَ مِنَ الشَّيْطَـنِ نَزْغٌ فَاسْتَعِذْ بِاللَّهِ إِنَّهُ سَمِيعٌ عَلِيمٌ ﴾

(Show forgiveness, enjoin what is good, and stay away from the foolish (i.e. don't punish them). And if an evil whisper comes to you from Shaytan (Satan), then seek refuge with Allah. Verily, He is Hearing, Knowing) (7:199-200),

﴿ادْفَعْ بِالَّتِى هِىَ أَحْسَنُ السَّيِّئَةَ نَحْنُ أَعْلَمُ بِمَا يَصِفُونَ - وَقُلْ رَّبِّ أَعُوذُ بِكَ مِنْ هَمَزَاتِ الشَّيـطِينِ - وَأَعُوذُ بِكَ رَبِّ أَن يَحْضُرُونِ ﴾

(Repel evil with that which is better. We are Best-Acquainted with things they utter. And say: "My Lord! I seek refuge with You from the whisperings (suggestions) of the Shayatin (devils). And I seek refuge with You, My Lord! lest they should come near me.'') (23:96-98) and,

﴿وَلاَ تَسْتَوِى الْحَسَنَةُ وَلاَ السَّيِّئَةُ ادْفَعْ بِالَّتِى هِىَ أَحْسَنُ فَإِذَا الَّذِى بَيْنَكَ وَبَيْنَهُ عَدَاوَةٌ كَأَنَّهُ وَلِىٌّ حَمِيمٌ - وَمَا يُلَقَّاهَا إِلاَّ الَّذِينَ صَبَرُواْ وَمَا يُلَقَّاهَآ إِلاَّ ذُو حَظِّ عَظِيمٍ - وَإِمَّا يَنزَغَنَّكَ مِنَ الشَّيْطَـنِ نَزْغٌ فَاسْتَعِذْ بِاللَّهِ إِنَّهُ هُوَ السَّمِيعُ الْعَلِيمُ ﴾

(Repel (an evil) with one which is better, then verily he with whom there was enmity between you, (will become) as though he was a close friend. But none is granted it except those who are patient ـ and none is granted it except the owner of the great portion (of happiness in the Hereafter, i.e. Paradise and of a high moral character) in this world. And if an evil whisper from Shaytan tries to turn you away (O Muhammad ) (from doing good), then seek refuge in Allah. Verily, He is the Hearing, the Knowing.) (41:34-36) These are the only three Ayat that carry this meaning. Allah commanded that we be lenient human enemy, so that his soft nature might make him an ally and a supporter. He also commanded that we seek refuge from the satanic enemy, because the devil does not relent in his enmity if we treat him with kindness and leniency. The devil only seeks the destruction of the Son of Adam due to the vicious enmity and hatred he has always had towards man's father, Adam. Allah said,

﴿يَـبَنِى آدَمَ لاَ يَفْتِنَنَّكُمُ الشَّيْطَـنُ كَمَآ أَخْرَجَ أَبَوَيْكُم مِّنَ الْجَنَّةِ﴾

(O Children of Adam! Let not Shaytan deceive you, as he got your parents ﴿Adam and Hawwa' (Eve)﴾ out of Paradise) (7:27),

﴿إِنَّ الشَّيْطَـنَ لَكُمْ عَدُوٌّ فَاتَّخِذُوهُ عَدُوّاً إِنَّمَا يَدْعُو حِزْبَهُ لِيَكُونُواْ مِنْ أَصْحَـبِ السَّعِيرِ ﴾

(Surely, Shaytan is an enemy to you, so take (treat) him as an enemy. He only invites his Hizb (followers) that they may become the dwellers of the blazing Fire) (35:6) and,

﴿أَفَتَتَّخِذُونَهُ وَذُرِّيَّتَهُ أَوْلِيَآءَ مِن دُونِى وَهُمْ لَكُمْ عَدُوٌّ بِئْسَ لِلظَّـلِمِينَ بَدَلاً﴾

(Will you then take him (Iblis) and his offspring as protectors and helpers rather than Me while they are enemies to you What an evil is the exchange for the Zalimun (polytheists, and wrongdoers, etc)) (18:50).

The devil assured Adam that he wanted to advise him, but he was lying. Hence, how would he treat us after he had vowed,

﴿فَبِعِزَّتِكَ لأغْوِيَنَّهُمْ أَجْمَعِينَإِلاَّ عِبَادَكَ مِنْهُمُ الْمُخْلَصِينَ ﴾

("By Your might, then I will surely, mislead them all. Except Your chosen servants among them (i.e. faithful, obedient, true believers of Islamic Monotheism).'') (38:82-83)

Also, Allah said,

﴿فَإِذَا قَرَأْتَ الْقُرْءَانَ فَاسْتَعِذْ بِاللَّهِ مِنَ الشَّيْطَـنِ الرَّجِيمِ ﴾

﴿إِنَّهُ لَيْسَ لَهُ سُلْطَانٌ عَلَى الَّذِينَ ءَامَنُواْ وَعَلَى رَبِّهِمْ يَتَوَكَّلُونَ - إِنَّمَا سُلْطَـنُهُ عَلَى الَّذِينَ يَتَوَلَّوْنَهُ وَالَّذِينَ هُم بِهِ مُشْرِكُونَ ﴾

(So when you ﴿want to﴾ recite the Qur'an, seek refuge with Allah from Shaytan, the outcast (the cursed one). Verily, he has no power over those who believe and put their trust only in their Lord (Allah). His power is only over those who obey and follow him (Satan), and those who join partners with Him.) (16:98-100).