What follows is my provisional translation (in other words, not official or authorized; see here for more) of a prayer by Shoghi Effendi, the original text of which has been published in Majmúʻiy-i-Munáját – Ḥaḍrat-i-Valíyy-i-Amru’lláh, p. 45. A fully vowelized typescript, reproduced below, is also available here.
O Thou our Lord! Enable us to recognize Thy mighty Cause, to comport ourselves with Thy glorious attributes, and to walk in Thy straight path through Thine ancient bounty and all-encompassing generosity. Verily, Thou art the All-Knowing; verily, Thou art the Most Merciful, the Most Compassionate.
A typescript of the original Arabic text of this prayer appears below (vocalization and punctuation not mine).
Adib Masumian 