Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:4:45 –

And Allah is most knowing of your enemies; and sufficient is Allah as an ally, and sufficient is Allah as a helper.  

God has better knowledge of your enemies, than you do, and He informs you of them in order that you avoid them. God suffices as a Protector, a Preserver of you from them, God suffices as a Helper, defending you against their plotting.
القرآن:٤:٤٥ –

وَاللَّهُ أَعْلَمُ بِأَعْدَائِكُمْ ۚ وَكَفَىٰ بِاللَّهِ وَلِيًّا وَكَفَىٰ بِاللَّهِ نَصِيرًا  

{والله أعلم بأعدائكم} منكم فيخبركم بهم لتجتنبوهم {وكفى بالله وليا} حافظا لكم منهم {وكفى بالله نصيرا} مانعا لكم من كيدهم.