Is it permissible to say: "Ya Ghaarat Allah?" And what is the meaning of this supplication?

The term "al-Ghara" (the raid/attack) and supplicating with it have not been reported in the Prophet's (peace be upon him) supplications, nor was it used by the righteous predecessors. The first to use it in poetry was Ibrahim ibn al-Mahdi. This term is frequently found in the speech and poems of the "Tariqiyya" (Sufi orders). "Al-Ghara" means attacking horses, and it is possible that what is intended by it is seeking victory from Allah. However, it contains the insinuation of supplicating to other than Allah. It is preferable to avoid using it in supplication due to its lack of reported usage, the ambiguity of its meaning, and the suspicion of supplicating to other than Allah.