48-22
And if those who do not believe fight with you, they would certainly turn (their) backs, then they would not find any guardian or a helper.
Infidels do not have any guardian or helper.
48-24
And it was He Who had held back their hands from you and your hands from them in the interior of Makkah, after He had given you victory over them {3}, and Allah is the Seer of what you do.
These verses refer to conquest of Makkah.
Conquest of Makkah (8 H):
The Makkan non-muslims broke the treaty with Muslims, therefore all Muslims capable of participating in war marched against Mecca under the leadership of (Prophet Muhammed (PBH). The Meccan non-muslims were not able to put up a fight with the mighty force of muslims and surrendered without a war. The Meccan non-muslims expected severe punishment from muslims due to the tortures they had inflicted on them earlier, but the prophet (PBH) forgave all except a few criminals. History has witnessed Prophet Muhammed (PBH) and his companions entering the holy city of Makkah with the humility of pilgrims, heads bowed down and hearts full of Allah’s fear. No one could guess that they were conquerors of Makkah the very place from where they were forced to flee. The announcement of general forgiveness brought, so great a relief that practically the whole population of Makkah rushed to surrender and a large number of Makkans immediately accepted Islam.
48-28
He it is Who has sent His messenger with guidance and the religion of truth that He may make it prevail over every religion, and Allah is sufficient as a Witness.
Islam is to prevail over all other religions.
48-29
Muhammed is the messenger of Allah, and those with him are strong against the infidels and merciful among themselves. You see them bowing down, prostrating, seeking grace from Allah and (His) pleasure, their marks due to the effect of, prostrations are there in their faces. That is their likeness (mentioned) in the Torah and their likeness mentioned in the Injeel. (They are) like vegetation which (first) puts forth its sprout then it becomes firm then it becomes thick, then it stands balanced on its stem, pleasing the sowers, that He may make the infidels angry through them. Allah has promised those among them who believe and do righteous works, protective forgiveness and a great reward. (R 4)
Some good qualities of prophet Muhammed (PBH) and his companions (PBH) are mentioned.