Lord Hanuman Mantra for Strength:

ॐ हं हनुमते नमः॥ (Om Ham Hanumate Namah)

Lord Hanuman Gayatri Mantra:

ॐ आञ्जनेयाय विद्महे वायुपुत्राय धीमहि।
तन्नो हनुमान् प्रचोदयात्॥ (Om Anjaneyaya Vidmahe Vayuputraya Dhimahi, Tanno Hanuman Prachodayat)

Lord Hanuman Moola Mantra:

ॐ श्री हनुमते नमः॥ (Om Shri Hanumate Namah)

Lord Hanuman Beeja Mantra:

ॐ ऐं भ्रीम हनुमते श्री राम दूताय नमः॥ (Om Aing Bhreeng Hanumate Shri Ram Dootaya Namah)

Lord Hanuman Shabar Mantra:

हुं फट् स्वाहा॥ (Hum Phat Swaha)