There are different kinds of prayer in my faith. To roughly enumerate them:
1) Obligatory prayer
2) Intercessory Prayer
3) Ritual prayer (funerals, and marriages)
The circumstances for each are different.
One of the three forms of Obligatory Prayer is:
"SHORT OBLIGATORY PRAYER
TO BE RECITED ONCE IN TWENTY-FOUR HOURS, AT NOON
I bear witness, O my God, that Thou hast created me to know Thee and to worship Thee. I testify, at this moment, to my powerlessness and to Thy might, to my poverty and to Thy wealth. There is none other God but Thee, the Help in Peril, the Self-Subsisting."
(Compilations, Baha'i Prayers, p. v)
Obligatory prayer is observed in private, never in public.
Intercessory prayer is performed at need and may be done in prayer meetings, but never as congregational prayer:
"AID AND ASSISTANCE
O Thou Whose face is the object of my adoration, Whose beauty is my sanctuary, Whose habitation is my goal, Whose praise is my hope, Whose providence is my companion, Whose love is the cause of my being, Whose mention is my solace, Whose nearness is my desire, Whose presence is my dearest wish and highest aspiration, I entreat Thee not to withhold from me the things Thou didst ordain for the chosen ones among Thy servants. Supply me, then, with the good of this world and of the next.
Thou, truly, art the King of all men. There is no God but Thee, the Ever-Forgiving, the Most Generous."
- Bahá'u'lláh
(Compilations, Baha'i Prayers, p. 16)
A ritual prayer is for special occasions, like burial, marriage or pilgrimage. The only "congregational prayer" in the faith is for the graveside.
"FOR THE DEPARTED
(The Prayer for the Dead is to be used for Bahá'ís over the age of fifteen. "It is the only Bahá'í obligatory prayer which is to be recited in congregation; it is to be recited by one believer while all present stand. There is no requirement to face the Qiblih when reciting this prayers." - A Synopsis and Codification of the Kitáb-i-Aqdas)
O my God! This is Thy servant and the son of Thy servant who hath believed in Thee and in Thy signs, and set his face towards Thee, wholly detached from all except Thee. Thou art, verily, of those who show mercy the most merciful.
Deal with him, O Thou Who forgivest the sins of men and concealest their faults, as beseemeth the heaven of Thy bounty and the ocean of Thy grace. Grant him admission within the precincts of Thy transcendent mercy that was before the 40 foundation of earth and heaven. There is no God but Thee, the Ever-Forgiving, the Most Generous.
Let him, then, repeat six times the greeting "Allah-u-Abha," and then repeat nineteen times each of the following verses:
We all, verily, worship God.
We all, verily, bow down before God.
We all, verily, are devoted unto God.
We all, verily, give praise unto God.
We all, verily, yield thanks unto God.
We all, verily, are patient in God.
(If the dead be a woman, let him say: This is Thy handmaiden and the daughter of Thy handmaiden, etc. ...)
- Bahá'u'lláh
(Compilations, Baha'i Prayers, p. 40)
You will note that prayers begin with an invocation and end with an exortation, but there are no "key words" for either.
Regards,
Scott