Abu Sufyan stood after the Battle of Uhud and said: “Glory to Hubal (their greatest idol), Glory to Hubal.”

Allah’s Messenger then said to his companions:

“Aren’t you going to respond to him?”

The Companions said: “What should we say, O Messenger of Allah?” He said:

“Say: “Allah is Most High and Most Glorious.”

Then Abu Sufyan said: “We have Al-`Uzza (their second idol), and you have no `Uzza. (Lord).”

Allah’s Messenger said to his companions:

“Aren’t you all going to respond to him?”

They said: “What should we say, O Messenger of Allah”?”

He said:

“Say: “Allah is our Lord, and you have no Lord.”[1]

Thereof, Allah (swt) here says:

بَلِ اللّهُ مَوْلاَكُمْ {But Allah is your protector}: That is, He is the One Who takes care of you.

وَهُوَ خَيْرُ النَّاصِرِينَ {and He is the best of helpers}: A person can achieve victory by many ways, such as by the support of another person, but the best of the helpers is Allah (swt); because He is the only able One to turn the loss into success and victory, just as He did in the Battle of Uhud, in which the victory has been clarified to Muslims after a period of time.

[1] Sahih Al-Bukhari: Book of Jihad, Hadith No. 2874.