Nay, (on the contrary), those who disbelieve, belie (Prophet Muhammad (Peace be

﴿بَلِ ٱلَّذِينَ كَفَرُواْ يُكَذِّبُونَ ﴾
[الانشِقَاق: 22]

Nay, (on the contrary), those who disbelieve, belie (Prophet Muhammad (Peace be upon him) and whatever he brought, i.e. this Quran and Islamic Monotheism, etc

﴿بل الذين كفروا يكذبون﴾ [الانشِقَاق: 22]

Al Bilal Muhammad Et Al
But instead the unbelievers reject it

Ali Bakhtiari Nejad
No, but those who disbelieved deny

Ali Quli Qarai
Indeed, the faithless impugn [the Apostle]

Ali Unal
Rather: those who disbelieve deny (it and its Message)

Hamid S Aziz
On the contrary, the unbelievers reject it

John Medows Rodwell
Yea, the unbelievers treat it as a lie

Literal
But those who disbelieved they lie/deny/falsify

Mir Anees Original
No, those who do not believe, deny

Mir Aneesuddin
No, those who do not believe, deny