All perfect praise be to Allah, the Lord of the worlds. I testify that there is none worthy of worship except Allah and that Muhammad, sallallahu ‘alayhi wa sallam, is His slave and Messenger.
First of all, this question and your previous ones clearly indicate that you suffer from Waswasah (devilish/obsessive whisperings) regarding falling into Shirk. We advise you to beware of such Waswasah, as it leads to grave evils if you let yourself get carried away with it.
Regarding man's fear of evil, it is considered a natural, inherent fear, and not Shirk. It was narrated that Huthayfah, may Allah be pleased with him, said, "The people used to ask the Messenger of Allah, sallallahu ‘alayhi wa sallam, about good, but I used to ask him about evil lest I be overtaken by it..." [Al-Bukhaari and Muslim]
There is no doubt that the evil of the Dajjaal is among the gravest evils; so the Muslim's fear of the Dajjaal's evil and Fitnah (temptation, tribulation) is legitimate. The Shariah instructs the Muslim to seek refuge with Allah from the evil and Fitnah of the Dajjaal, and it urges the Muslims who are alive when he appears to flee from him lest they become influenced by his evil. The Prophet, sallallahu ‘alayhi wa sallam, said, "Whoever hears about the coming of the Dajjaal should stay away from him for, by Allah, a man would come to him thinking of himself that he is a strong believer, but then he will follow the Dajjaal because of the doubts which he will spread." [Abu Daawood and others]
However, the excessive fear of the Dajjaal that drives the person to refrain even from seeking refuge with Allah from him is considered cowardice and dispraised fear in the Shariah. The Prophet, sallallahu ‘alayhi wa sallam, used to seek refuge with Allah from cowardice.
Allah knows best.