in the lap of the gods
US /ɪn ðə læp əv ðə ɡɑːdz/
UK /ɪn ðə læp əv ðə ɡɑːdz/

1.
beyond human control; left to fate or chance
:
•
We've done all we can; the rest is in the lap of the gods.
•
The outcome of the election is still in the lap of the gods.