It is uncertain whether in the most ancient form of the Iranic worship the cult of Mithra was included or no.
"The Seven Great Monarchies Of The Ancient Eastern World, Vol 3. (of 7): Media" by George Rawlinson
Once a year, at the feast of Mithras, the king of Persia, according to Duris, was bound to be drunk.
"The Seven Great Monarchies Of The Ancient Eastern World, Vol 5. (of 7): Persia" by George Rawlinson
Christ himself he identified with Mithra, and gave Him his dwelling in the sun.
"The Seven Great Monarchies Of The Ancient Eastern World, Vol 7. (of 7): The Sassanian or New Persian Empire" by George Rawlinson
Neither in outward form nor in character do Vishnu and Siva show much more resemblance to Apollo and Mithra than to the Vedic gods.
"Hinduism And Buddhism, Volume II. (of 3)" by Charles Eliot
In Roman times the worship of Mithra spread into Europe from Persia.
"Myths of Babylonia and Assyria" by Donald A. Mackenzie
These carvings, according to Mistral's note, were dedicated to the god Mithra.
"Frédéric Mistral" by Charles Alfred Downer
But, more than all the others, Mithra, a Persian god, becomes the universal god of the empire.
"History Of Ancient Civilization" by Charles Seignobos
Mithra, too, was born in a cave.
"Visionaries" by James Huneker
They were sacred to Mithras, and were made use of for his rites.
"A New System; or, an Analysis of Antient Mythology. Volume I." by Jacob Bryant
The Persians had their Mithra.
"The Necessity of Atheism" by Dr. D.M. Brooks
His Gods are many or are none,
Saturn and Mithra, Christ and Jove,
Consorting, as the Ages run,
With Vestal choir or Pagan drove.
"The Door Of Humility" by Alfred Austin
The Word which the reason of Plato discerned;
The truth, as whose symbol the Mithra-fire burned;
The soul of the world which the Stoic but guessed,
In the Light Universal the Quaker confessed!
"The Quaker Alumni" by John Greenleaf Whittier