Gayatri mantra
Om Bhur Buvaha Suvaha
Thath Savithur Varenyam
Bhargo Devasya Dheemahi
Dhiyo Yonaha Prachodayath

May we know the Lord;
Let us contemplate the Supreme Reality;
And may that Brahman direct and illumine our minds.

More about the Gayatri mantra from Sathya Sai

Twamave mata
Twameva Mata, cha Pita twameva
Twameva bandhu, cha saka twameva
Twameva vidya, dravinam twameva
Twameva sarvam mama Deva deva

O my God of Gods,
You are my Mother and Father
You are my family and friends
You are my wealth, you are my knowledge
You are my everything, O My God of Gods

O Sai Baba, we wave lights before You, the bestower of happiness to the Jivas.
Give us your servants and devotees rest under the dust of Your feet.
Burning desire you remain absorbed in Your Self and show the Lord God to the aspirants.
As one feels intently, You give him experiences or realizations accordingly.
Oh kind-hearted, your power is such! Meditation on Your name removes our fear of the samsara.
Your method of work is really unfathomable as you always help the poor and helpless. In this Kali age, You the all-pervasive Datta, have really incarnated as Sagun Brahman.
Ward off the fear of samsara of the devotees who come to You every Thursday [and now] so as to enable them to see the feet of the Lord.
Oh God of Gods, I pray that let my treasure be the service of your feet. Feed — with happiness as the cloud feeds the chatak bird with pure water and thus keep up your Word. Amen

There’s a long arati too
Listen to it being sung at a kirtan in Eithin on September 24 1983.

From the Guru Gita
Guru Brahma, Guru Vishnu
Guru Dev Maheshwara,
Guru saakshat Parabrahma
Tasmai Sri Guruve namah

Guru is Brahma, Guru is Vishnu,
Guru is Shiva Maheshwara;
Truly the Guru is beyond Brahma,
Salutations to that Guru

Here’s the whole Guru Gita and the transliteration from the sanskrit.

From universal prayers
May my body become pure
May my mind become pure
May my soul become pure
May I be free from impurity and sin
May I realise myself as the light divine

From the unreal to the Real
From the unreal lead me to the Real;
from darkness lead me into Light;
from mortality lead me into immortality,
O Rudra, with Thy compassionate face protect me, Thou

Asato ma Sat gamaya, tamaso ma Jyoti gamaya, mrto ma amrita gamaya

Sun Prayer
To the Sun who is compassionate for the welfare of those who fall prostrate before Him. Who is great of soul, who has seven equally swift horses. Who has great glory, who awakens the beds of lotuses, who splits asunder the covering of the veil of darkness be reverence. To Him who works merit through the superabundance of fire, who gives many objects of desire, who reclines amongst beams of radiant fire, be reverence.

To the sun who is without birth, the cause of the three worlds, the soul of created beings, the Bull, Highest amongst those who are greatly compassionate, the home whence the eye originated, be reverence.

To the Sun who is maintained by knowledge, who is in the inmost soul, the foundation of the world’s welfare, the self-existent, the eye of all the worlds, Highest among the Gods, boundless in glory, be reverence.

Thou for a moment the crest jewel of the day-spring mountain, the honoured messenger of the Gods to the world, Thy body has acquired a deep red hue O Sun so that thou shinest exceedingly with masses of light that calls the three worlds into life.

Mounting Thy equally-proportioned chariot with horses that are ever unwearied, Thou coursest the broad world for our good.

O Sun, Thou purifier of the three worlds, protect me who am devoted to thy parrot-hued steeds and who am most pure through the dust of Thy feet and who am prostrate before Thee, O Thou that art kind to folk who bow to Thee

Thus the Sun who exists as the procreator of the worlds, who is the sole-cause of the glory that calls the three worlds into life, who exists as the lamp of all the worlds. To Thee, O choicest of the thirty gods, I ever prostrate myself.