Saying Dhikr frequently to ward off Satan

Q: Can a Muslim who faithfully recites the daily Adhkar (invocations) be possessed by Jinn (creatures created from fire)? Are there any Adhkar (invocations and remembrances said at certain times on a regular basis) prescribed for protection from Jinn? Please advise us. May Allah reward you with the best reward. As-salamu `alaykum warahmatullah wabarakatuh (May Allah's peace, mercy and blessings be upon you).

A: Allah (Glorified be He) has ordered His Servants to take refuge in Him (Glorified and Exalted be He) from the whisperings of devils, and from their presence in our houses and whilst eating or drinking and during intimate relations. Allah (Exalted be He) states, And say: "My Lord! I seek refuge with You from the whisperings (suggestions) of the Shayâtîn (devils). "And I seek refuge with You, My Lord! lest they should come near me." It is authentically reported that "When anyone lands at a place, and then says: 'I seek refuge in the Perfect Words of Allah from the evil of what He has created,' nothing will harm him until he leaves that place." and that "Whoever recites Ayat-ul-Kursy (the Qur’anic Verse of Allah’s Chair, Surah Al-Baqarah, 2:255) on going to bed, Satan will not approach him until the morning.'. It is also authentically reported that "Whoever says La ilaha illa-Allah wahdahu la sharika lah, lahul-mulk walahul-hamd wahuwa ‘ala kulli shay’in qadir (Part No. 24; Page No. 182) (There is no god but Allah Alone, with no partner or associate. His is the Dominion and to Him be praise, and He is Able to do all things) one hundred times in a day, will be protected from Satan for that day until evening comes." According to the Sunan of Al-Tirmidhy, and other narrators, the Prophet (peace be upon him) stated, "Recite 'Qul huwa allahu ahad' and Al-Mu`wwidhatayn three times in the evening and when you rise in the morning; this will protect you from any harm. Al-Tirmidhy commented: This is a Hadith Hasan Sahih (good authentic Hadith). In addition, there are other reported supplications for the same purpose.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.