hanuman dvadasha nama strotra is a short and powerful, easy to chant hymn of Hanuman comprised of twelve names indicating hanuman's great qualities and his glories. The hymn given in chapter 55 of parāshara Samhitā.

This mantra is taught to sage Maitreya by sage parāshara and he prescribes to chant this hymn after chanting any mantra of Hanuman.

he also gives two other mantras, seven lettered Hanuman mantra and the sixteen lettered Hanuman mantra in the same chapter, which is also given in this book

In a normal chanting ritual procedures of nyaasa (sanctifying the different body parts with mantras), dhyana (visualization and contemplation of the deity's form) and gestures are not required. this makes the mantra easy to chant for anyone and everyone who is devoted to hanuman and have trust in him.

in some versions of the hymn the benefits of chanting this hymn of twelve names of Hanuman is given as

"whoever recites these twelve names of the lord of monkeys (kapīndra) the great one, daily (regularly) before going to sleep, and especially during travel, doesn't have the fear of death, and shall become victorious everywhere"

This mantra can be chanted to gain good heath, strength , longevity and victory. and to attain all the desires by the grace of lord Hanuman