Indra Gayatri Mantra can be chanted for security in aggression or war
Aum Sahasra-Netraye Vidmahe
Vajra hastraye Dhimahi
Tanno Indrah Prachodayat
Meaning of the Mantra:
“Om. Let us meditate on Indira, the Lord with a thousand eyes. May that great God who holds the invincible thunderbolt in his hand inspire and illumine our mind and understanding.”