The following is my provisional translation (in other words, not official or authorized; see here for more) of a prayer extracted from Baháʼuʼlláh’s Tablet of Visitation for the Imám Ḥusayn, published in Majmúʻiy-i-Alváḥ-i-Mubárakih, p. 210.
I beseech Thee, O Lord of Names, by Thy Cause through which Thou hast subdued every kingdom and dominion, and by Thy Call through which the denizens of Paradise have become attracted, to aid us with that which will exalt our stations at the court of Thy glory and in the precincts of Thy nearness.
A typescript of the Arabic text of this passage appears below (vocalization mine).
Adib Masumian 