Undoubtedly, the torment of their Lord is not a thing to become un-fearful.
Their Lord's requital is not taken for granted.
for none is secure from the punishment of their Lord
Surely the chastisement of their Lord is (a thing) not to be felt secure from -
That truly their Lord's torture (is) not trusted/safe
… do not want to be convicted by their Lord
Indeed the punishment of their Lord is not a thing to be unafraid of
Verily, from the punishment of their Lord none can feel secure
Surely, the torment of their Lord is not a thing which should not be feared
The fact is that the punishment of their Lord is not (a thing) to be felt secure from
Verily! The torment of their Lord is that before which none can feel secure