هُنَالِكَ الْوَلَايَةُ لِلَّهِ الْحَقِّ هُوَ خَيْرٌ ثَوَابًا وَخَيْرٌ عُقْبًا
[18:44]
Here is protection only Allah's, the True One; He is best in (the giving of) reward and best in requiting.
There, the (only) protection comes from Allah, the True One. He is the Best to reward, and the Best to give success.
In this case is protection only from Allah, the True, He is Best for reward, and best for consequence.