If you like to meditate in the night forests, deserted houses and other habitats without people, you know, that usually the habitats of this kind are also liked by rakshasas and other quarrelsome creatures.
Rakshoghna-Mantra was granted to us by Bhagavan Shree Krishna in order to eliminate the asuric influences.
If you are especially afraid of the above-mentioned creatures, you can attach Rakshoghna-Mantra to the door of your room.
In case you are extremely afraid of the evil influences, my recommendation is to learn how to use "Narayana-Kavacha", but it is rather complicated, as Narayana-Kavacha is based on Nyasas and takes about 30 minutes of rituals.
Rakshoghna-Mantra = Verse 11.36 of "Shree Bhagavad-Gita".
OK, now the Verse 11.36 of "Shree Bhagavad-Gita" and the Tika by Shree Shreemad Vishvanatha Chakravarti Thakur (from the translation by OM VISHNUPAD SHREE SHREEMAD NARAYANA MAHARAJ - LINK):
Arjuna said: O Hrishikesha, by glorifying Your Name, Form and Qualities, the entire universe becomes joyful and attains attachment to You. The demons scatter out of fear, while the hosts of perfected beings offer their obeisances to You. indeed, all this is most appropriate.
Shree Shreemad Vishvanatha Chakravarti Thakur: "Arjuna has knowledge of the following truth: the divine form of Bhagavan is pleasing to those who are devoted to Him, whereas Bhagavan displays His dreadful feature to those who are averse to Him. Arjuna explains this while offering prayers to Shree Bhagavan. The word sthane is not declinable and it means ‘appropriate’.
It is used in all components of this verse. Arjuna has addressed Bhagavan Shree Krishna as Hrishikesha, meaning ‘one who turns the senses of His devotees toward Himself and repels the senses of His non-devotees’.
“This entire world is being attracted to You by performing sankirtana (chanting) of Your glories. This is appropriate, because this world is devoted to You.
Rakñasas, Asuras, Danavas, Pishacas and so forth are running in all directions out of fear.
This is also appropriate because they are averse to You.
Hosts of beings who have become perfect by practising bhakti to You are paying obeisances to You. This is also appropriate because they are Your devotees.”
This verse is famous in the scriptures pertaining to the chanting of mantras, as the Rakshoghna-Mantra, a mantra for destroying demoniac elements (Rakshasas)".
