unprayable
/ˌʌnˈpreɪəbəl/Definitions
1. adjective
Not capable of being prayed for; too terrible or distressing to be the subject of prayer.
“The traumatic event had left the survivors with an unprayable grief.”
2. noun
A thing that is too terrible or distressing to be the subject of prayer.
“The loss of her child was an unprayable sorrow.”