Translation of the verse 40 from Surah At-Taubah : Number of verses 129 - - page 193 - Part 10.
If you help him (Muhammad SAW) not (it does not matter), for Allah did indeed help him when the disbelievers drove him out, the second of two, when they (Muhammad SAW and Abu Bakr) were in the cave, and he (SAW) said to his companion (Abu Bakr): "Be not sad (or afraid), surely Allah is with us." Then Allah sent down His Sakinah (calmness, tranquillity, peace, etc.) upon him, and strengthened him with forces (angels) which you saw not, and made the word of those who disbelieved the lowermost, while it was the Word of Allah that became the uppermost, and Allah is All-Mighty, All-Wise.
If you do not aid the Prophet - Allah has already aided him when those who disbelieved had driven him out [of Makkah] as one of two, when they were in the cave and he said to his companion, "Do not grieve; indeed Allah is with us." And Allah sent down his tranquillity upon him and supported him with angels you did not see and made the word of those who disbelieved the lowest, while the word of Allah - that is the highest. And Allah is Exalted in Might and Wise.
(9:40) If you do not help your Prophet, (it does not matter): Allah did help him before when the disbelievers forced him to go away from his home, and he was but the second of two: when the two were in the cave; when he was saying to his Companion, "Be not distressed: indeed Allah is with us. " *42 Then Allah sent down peace of mind to him from Himself, and helped him with the forces you did not see, and made the word of the disbelievers abased. And Allah's Word is always supreme, for Allah is All-Mighty, All-Wise.
*42) This refers to the occasion when the disbelievers had decided to assassinate the Holy Prophet, and the very night fixed for his assassination he had left Makkah for Al-Madinah. By that time most of the Muslims had migrated to Al-Madinah in twos and threes and only a few helpless ones had remained behind in Makkah. As he was sure that he would be pursued, he took only Hadrat Abu Bakr with him and went southward instead of following the northern route to Al-Madinah and remained hidden in the Thaur Cave for three days. In the meantime the blood thirsty enemies had begun to make a thorough search for him all around Makkah and some of them reached the very mouth of the Cave where he was hidden. On this critical occasion Hadrat Abu Bakr naturally felt alarmed lest they should peep into the Cave, and see them. But the Holy Prophet remained as calm as before and reassured his Companion, saying, "Be not distressed: indeed Allah is with us."