هُنَالِكَ ٱبْتُلِىَ ٱلْمُؤْمِنُونَ وَزُلْزِلُوا۟ زِلْزَالًا شَدِيدًا
Hun a lika ibtuliya almuminoona wazulziloo zilz a lan shadeed a n [for] there and then were the believers tried, and shaken with a shock severe.
 - Mohammad Asad
there, the believers were put to test; and were shaken with tremendous shaking.
 - Muhammad Farooq-i-Azam Malik
Then and there the believers were put to the test, and were violently shaken.
 - Mustafa Khattab
There were the believers sorely tried, and shaken with a mighty shock.
 - Marmaduke Pickthall
In that situation were the Believers tried: they were shaken as by a tremendous shaking.
 - Abdullah Yusuf Ali