Is the belief that seeking refuge in Allah from the evil of those who blow on knots, and that "they cannot harm anyone except by Allah's permission," sufficient for protection from magic, correct?

Surat Al-Falaq is one of the greatest and most excellent surahs in the Noble Qur'an, and seeking protection through it is very beneficial, especially along with Surat Al-Ikhlas (definition) and Surat An-Nas. It has been authentically reported from the Prophet, peace and blessings be upon him, that reciting them with Al-Ikhlas three times in the morning and evening is sufficient against everything. He used to recite them before sleeping and wipe his body with them three times. The Prophet, peace and blessings be upon him, used to seek refuge with them from the evil eye of jinn and humans, and they encompass seeking refuge from every harm.