Note that as applied to the Nyingma Sect, the "Supreme Head" designation is largely ceremonial, and was created only after the Tibetans went into exile. Previous holders of the title were Dudjom Rinpoche, Dilgo Khyentse Rinpoche, and Penor Rinpoche. The current Supreme Head is H.H. Mindroling Trichen XI.
Long Life Prayer for His Holiness Penor Rinpoche
OM SWA TI
LHA SEI DAM DZIN YESHE ROL PAI TSAL
Son of the gods, Samaya upholder, the display of primordial wisdom's play,
DRUB PAI WANG CHUG PEDMA NORBU TSEN
Known as Pedma Norbu, the powerful holder of Accomplishments;
KATRIN LA MED GON KYOD SHAB TEN SOL
Please remain firm, Protector of unequaled kindness!
GYAL WAI RING LUG SANG CHEN NGA GYUR WAI
In the long tradition of Enlightened Ones, the great secret school of Nyingmapa,
DO NGAG SHED DRUB GYA TSO-I KHORLO GYUR
You are the chakravartin ruler of the ocean of Sutras and Tantras, both academic and applicable.
PAG NOR YAN LAG DUN GYI SUNG TSOG CHEI
Assembler of the seven-branch wealth of the Aryas,
MI JIG SENGE TRI LA SHAB TEN SOL
Please remain firm, like a fearless snow lion throne.
PHO MED TAG TEN CHI MED TSEI TA YEI
Immortal life, unchanging and firm,
MI SHIG SOL SHIG DRAL WA YEI SANGYE
Indestructible, free from calamity is the original Buddha.
KUN ZANG CHO KU-I NGO WO TSO SHEI SOL
Please remain as the nature of the dharmakaya Primordial Buddha.
DAG GYI MO GU PHUN SUM TSOG PA DANG
Through my fully-endowed fervent devotion and
TSA SUM DEN DANG KON CHOG DEN PAI TU
The Truth of the Three Jewels and the three Roots,
JI TAR MON PA YID SHIN DRUB PA YI
May all aspirations be wish-fulfillingly accomplished,
TASHI PAL GYI SA SUM NANG WAR SHOG
And may the glory of good fortune prevail throughout the Three Realms!
This was written by Khenpo Nga-ga Rinpoche.
May virtue prevail!