ENOfficial
Nafi' b. `Utba reported God's messenger as saying, "You will attack Arabia and God will conquer it; then Persia and God will conquer it; then you will attack the Byzantines and God will conquer them; then you will attack the dajjal and God will conquer him." Muslim transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنْ نَافِعِ بْنِ عُتْبَةَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «تَغْزُونَ جَزِيرَةَ الْعَرَبِ فَيَفْتَحُهَا اللَّهُ ثُمَّ فَارِسَ فَيَفْتَحُهَا اللَّهُ ثُمَّ تَغْزُونَ الرُّومَ فَيَفْتَحُهَا اللَّهُ ثُمَّ تَغْزُونَ الدَّجَّال فيفتحه الله» . رَوَاهُ مُسلم
sunnah.com