For them will be punishment in the life of [this] world, and (13:34)

﴿لَّهُمْ عَذَابٌ فِي الْحَيَاةِ الدُّنْيَا ۖ وَلَعَذَابُ الْآخِرَةِ أَشَقُّ ۖ وَمَا لَهُم مِّنَ اللَّهِ مِن وَاقٍ﴾
[ الرعد: 34]

13:34 For them will be punishment in the life of [this] world, and the punishment of the Hereafter is more severe. And they will not have from Allah any protector.

There is a punishment for them in this world in the form of being killed and imprisoned at the hands of the believers, but the punishment of the Hereafter that awaits them will be more severe and more difficult than the punishment of this world because of its never-ending severity and continuity.
They will have no one to protect them from Allah’s punishment on the Day of Judgement.

For them is a torment in the life of this world, and certainly, harder is the torment of the Hereafter. And they have no protector against Allah.

phonetic Transliteration

Lahum AAathabun fee alhayati alddunya walaAAathabu alakhirati ashaqqu wama lahum mina Allahi min waqin

Abdullah Yusuf Ali - Translation

For them is a penalty in the life of this world, but harder, truly, is the penalty of the Hereafter: and defender have they none against Allah.

Safi-ur-Rahman al-Mubarakpuri

For them is a torment in the life of this world, and certainly, harder is the torment of the Hereafter. And they have no defender (or protector) against Allah.

Page 253 English transliteration