Taken in part from the Lotsawa House website:
On each one of these successive tenth day festivals, the specific benefits of observing the practice follow in this order:
In the sixth month, all kinds of illness, döns, and obstructors are pacified, and lifespan, merit and prosperity are increased.
In the twelfth month, happiness and sharpness of mind are accelerated and confidence increases, so that humans and non-humans are brought under your power.
In the first month, power, position and wealth will grow, and earth-lords and guardians obey you like servants.
In the second month, harm and damage caused by the lord of death and the eight classes of gods and spirits are pacified, discipline is purified, and unlimited wisdom blazes.
In the third month, you are untouched by harm from inauspicious conjunctions of planets and stars, and from enemies and thieves. At home and abroad, auspiciousness, peace and goodness increase everywhere.
In the fourth month, you will be immune to harm from earth-lords, nāgas and nyens, and dharmapālas and guardians will accomplish whatever activity you have entrusted to them.
In the fifth month, all harm from obstacles, enemies and döns is pacified, and the objects of your wishes are brought under your control.
In the seventh month, chronic ailments, weaknesses of the immune system and the like are purified, the body is healthy, the mind is happy, your entourage and wealth increase, and your aspirations are fulfilled.
In the eighth month, obstacles of the year, month, day and time, as well as evil signs and the like, are all pacified, and any decline in wangthang or lungta is restored.
In the ninth month, sickness and döns caused by the eight classes and jungpo demons, untimely death and fatal accidents all are pacified, serious curses are eliminated, you are freed from sorcery and psychic attacks, and your own body becomes vajra.
In the tenth month, wrongs and downfalls of the three vows such as disrespecting sacred objects, and breakages and impairments of samaya are all healed, and your mind stream is purified.
In the eleventh month, sudden misfortune, such as untimely death, will not occur, and as soon as we transfer from this life, we are born in the pure land of Lotus Light before Guru Rinpoche himself.
Not only are the benefits of observing the tenth day absolutely limitless, but for concentrating on the various practices of gathering merit and making prayers, these occasions are praised as extraordinarily special.
Composed by Jikdral Yeshe Dorje, Kyabjé Dudjom Rinpoche