Shall I inform you upon whom the devils descend? They descend on every sinful, false one. [As-Suara 221-222]
And he whose sight is dim to the remembrance of the Beneficent, We assign unto him a devil who becometh his comrade; And lo! they surely turn them from the way of Allah, and yet they deem that they are rightly guided. [Az-Zukhruf 36-37]
Commonly, a religious life with regular prayer, Qur'an reading and adhering to essential Sunnah protects against the attack of Jinn. But in many cases this is not sufficient, for the causes of the attack of Jinn are many:
Often there is no obvious reason or occasion, but in general it needs an occasion and a "gap", so that the Jinn can enter. If the defenses of man are not active, which on the spiritual plane are faith, God-remembrance and adherence to the Sunnah of the Prophet ? , and especially when man becomes emotional (very angry, sad or anxious), he is vulnerable.
It is not surprising in today's conditions that the infestation by Jinn has become epidemic. The further the infestation has advanced, the more difficult the cure becomes; not because the healing is difficult in itself, but because the person concerned is so subjugated by Satan that he himself does not want any healing and feels a strong antipathy towards the healing process and potential healers. Thus, e.g. the person concerned is not able to read the Qur'an or does not want to visit a Raqi. And it is nearly impossible to help someone who does not want to be helped.
Sadly, there is an enormous ignorance about Ruqyah and symptoms are often not recognized, although healing would be simple in most cases: the mere reading of certain verses of the Qur'an with appropriate intention. Something that every Muslim should be able to do!
Here are a few possible symptoms listed that may occur individually or in combination. If someone has several of these symptoms or a significant one (e.g. one can see Jinn), one should immediately try self-healing, and if one does not feel any relief after sufficient efforts one should go to a healer.
If oneis worried about being affected, one should take precaution and treat it and do not delay it for any reason. Ruqyah has no negative side effects, and it is not intended solely for the expulsion of Jinn, but also an alternative healing method. A companion of the Prophet s.a.w. for example healed the sting of a scorpion with the help of Surat al-Fatihah.
Basic safety measures
The measures to protect oneself against Jinn, Magic and 'Ain are corresponding with those one should take if a problem has already occurred...
Ruqyah - Islamic Exorcism