You will invade the Arabian Peninsula and Allah will conquer it; then Persia and Allah will conquer it; then you will attack the Byzantines and Allah will conquer them; then you will attack the Anti-Christ and Allah will conquer him
Authentic hadithعن نافع بن عتبة رضي الله عنه ، قال: كنا مع رسول الله صلى الله عليه وسلم في غزوة، قال: فأَتَى النبيَّ صلى الله عليه وسلم قومٌ من قِبَل المغرب، عليهم ثياب الصوف، فوافقوه عند أَكَمة، فإنهم لَقيامٌ ورسول الله صلى الله عليه وسلم قاعد، قال: فقالت لي نفسي: ائتِهم فقُم بينهم وبينه لا يَغتالونه، قال: ثم قلتُ: لعله نَجِيّ معهم، فأَتَيتُهم فقمتُ بينهم وبينه، قال: فحفِظتُ منه أربع كلمات أَعُدُّهن في يدي، قال: «تَغزون جزيرة العرب فيَفتحها الله، ثم فارس فيفتحها الله، ثم تغزون الروم فيفتحها الله، ثم تغزون الدَّجَّال فيفتحه الله» قال: فقال نافع: يا جابر، لا نرى الدجال يخرج، حتى تُفتح الروم.
Nāfi‘ ibn ‘Utbah (may Allah be pleased with him) reported: We were with the Messenger of Allah (may Allah's peace and blessings be upon him) in a battle. Some people came to him from the direction of the west. They were dressed in woolen clothes and they met him on a hillock. They stood while the Messenger of Allah (may Allah's peace and blessings be upon him) was sitting. I said to myself: "Go and stand between them and him, lest they should assassinate him." Then I said [to myself] that he was probably having a private conversation with them. However, I went to them and stood between them and him. I kept to my memory four words that he (the Prophet) said: which I count on my fingers: "You will invade the Arabian Peninsula and Allah will conquer it; then Persia and Allah will conquer it; then you will attack the Byzantines and Allah will conquer them; then you will attack the Anti-Christ and Allah will conquer him." Nāfi' said: ''O Jābir, we think the Anti-Christ will not appear until the Byzantines are conquered."
Explanation
The Companion Nāfi‘ ibn ‘Utbah relates that he was with the Messenger of Allah (may Allah's peace and blessings be upon him) during a battle. Some people clad in woolen clothes came from the direction of the west to meet the Prophet (may Allah's peace and blessings be upon him) who was sitting on a high place, and they were standing. Nāfi‘ said to himself that he should not leave the Prophet alone with those strangers, so he should go and stand with them, so that they would not kill the Prophet unnoticed. Then he said to himself that the Prophet was probably having a private conversation with them and did not want anyone to hear or know about it. However, he went to where they were standing and stood between them and the Prophet (may Allah's peace and blessings be upon him). Then Nāfi‘ said that he memorized from the Prophet four sentences that he could count on his fingers. The Prophet (may Allah's peace and blessings be upon him) said that Muslims after him would fight the disbelieving Arabs. All Arabs would enter Islam, and the whole Arabian Peninsula would be under the rule of Muslims. Then he said that they would fight the Persians and conquer all the Persian territories. Then they would fight the Byzantines, defeat them, and open their lands. Then they would fight the Anti-Christ, and Allah would vanquish him. Then Nāfi‘ said to Jābir ibn Samurah that the Anti-Christ would emerge only after the Byzantines are conquered. These four things happened except the fighting of the Anti-Christ, which will take place just before the advent of the Hour.
Source · Narrated by Muslim
From the Hadith Encyclopedia (hadeethenc.com).