Praise be to Allah.
We have not come across any hadith which speaks of what you mention of “hisaar” or protection against black magic.
It is not permissible for anyone to attribute any hadith to the Prophet (blessings and peace of Allah be upon him) unless he is certain of its soundness, because the Prophet (blessings and peace of Allah be upon him) said: “Whoever tells a lie about me deliberately, let him take his place in Hell.” Narrated by al-Bukhaari (107) and Muslim (3). And he said: “Do not tell lies about me, for whoever tells lies about me will enter the Fire.” Narrated by al-Bukhaari (106).
And he said: “Whoever attributes a hadith to me, knowing it to be false, is one of the liars.” Narrated by al-Bukhaari (1).
Allah, may He be glorified, has prescribed for His slaves that by means of which they can protect themselves against magic and other evils before they happen, by His leave. That includes the following:
Constantly obeying Allah, by doing everything that Allah has enjoined upon His slaves and avoiding everything that is prohibited; sincerely repenting from all sins and bad deeds; seeking to draw closer to Him, may He be glorified, by doing supererogatory (naafil) acts of worship; putting one’s trust in Allah, seeking His help, and turning to Him alone. Hence it is narrated from the Prophet (blessings and peace of Allah be upon him) that he said: “Be mindful of Allah, and He will take care of you; be mindful of Allah and you will find Him before you. If you ask, then ask of Allah, and if you seek help, then seek the help of Allah.” The hadith was narrated by Imam at-Tirmidhi, who said: It is a hasan saheeh hadith.
Persisting in reciting the adhkaar of morning and evening, which includes the following:
End quote from the website http://almoslim.net/node/202219
What the Muslim must do is adhere to the Qur’an and saheeh Sunnah, and beware of the innovations and myths of the Sufis.
And Allah knows best.