(The article in question says it would provide "three events" while it provides only one such event).

(Original Source: http://www.55a.net/firas/english/?page=show_det&id=33&select_page=2)

The call of the Messenger (Peace be upon him) to Islam provoked the polytheists and aroused  their rage. It also fuelled the Jews’ grudge and guile. After the Moslems exodus to Madina ,  the Jews and the polytheists joined hands to pose a real threat on the life of Allah’s  Messenger (Peace be upon him). Conspiracies aiming at assassinating or killing him  increased, and precautions and preparations against such conspiracies and threats  represented a burden impeding the task of propagating Islam. Therefore, Allah promised to  protect his Messenger against his enemies, and told him of that in His Saying: (O Messenger!  Proclaim what has been sent down to you from your Lord. And if you did not, then you would  not have fulfilled and proclaimed His Message. Allah will protect you from men (who mean  mischief), for Allah guides not those who reject Truth.) (V:67)

Aisha (May Allah be pleased with her) said: “Allah’s Messenger (Peace be upon him) used to  be guarded until the verse (Allah will protect you from men) was revealed. Thereupon he  looked out of the tent and asked the guards to go freeing them of the assignment of guarding  him , saying: “O people! Go away, for Allah, the Exalted, has guaranteed my security.”

This represented an excellent example of utter trust in the promise of Allah (SWT) and the  perfect confidence in its realization. Thenceforth he did not appoint guards for his private  security, exclusively trusting in and depending on the truthful Divine Promise.

A reasonable man would not risk his life if he had any doubt about the truthfulness of such  a promise. Subsequent events occurred then, realizing Allah’s Promise to safeguard his  Messenger.

Following are three of such events:

The event of “That Al-Riqa’ campaign”:
Jabir ibn Abdullah said: “ We accompanied Allah’s Messenger (Peace be upon him) in Najd  Campaign. When he was in a valley full of thorny trees and it was midday nap, he sat in the  shade of a tree and hung his sword. The others also scattered in the shade of trees. While  we were in that state Allah’s Messenger (Peace be upon him) called us. We went to him to see  a Bedouin sitting in front of him. He said: ‘This (Bedouin) came upon me while I was asleep  and drew my sword. I woke up to see him standing over me brandishing an unsheathed sword. He  said: ‘Who can protect you from me?’ I said: ‘Allah!’ Then he sheathed the sword and sat  down, as you see him.’ Allah’s Apostle (Peace be upon him) did not punish him.”

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Reference  : "ILM AL IMAN" by ABD ALMAJEED ALZENDANEE