Upon the infidels, which there is none to repel.
For the disbelievers, none can stop it.
the unbelievers which none can prevent
The disbelievers -- there is none to avert it -
To the disbelievers (there) is not for it (a) repeller/pusher
Which will be imposed upon the disbelievers whom no one can save from
- Upon the disbelievers – the punishment that none can avert
The disbelievers, and which none can repel
Upon the disbelievers, which no one can repel
(Let him know) there will be none to ward it off from the disbelievers
Upon the disbelievers, which none can avert