No Muslim can fail to recognise dajjal. He would have one eye (blind in the other) and would have Kaafir written on his forehead and would claim to be God
Some fools of course will lose their iman by accepting him as god :Emoji29:
What would i do if i met Abz, if it's in the morning i normally wash my face, get out the toothbrush, put some toothpaste on it, and stare at him as i brush my teeth, then i show him my teeth, do wudhu, and get ready for fajr prayer ..... i must admit though, i rarely meet him face to face considering the solar day's divided into 24 hours for practical purposes and it includes night ..... same with 'eesa.
Edit:
Scimi met him once, and they went and ate kebabs at the grill shop.
When we address/mention the prophets, it should be out of respect. As in the case of one inferior in status (student) wouldn't address a Professor "Yo Charles, what's going on?" (actually, these days who knows!) ....
Generally Prophets, righteous and scholars are held in high esteem. Prophet Isa (a.s): A.S is shorten to imply alayhi s-salaam/peace be upon him.
All Muslims ought to believe in Prophet Isa (a.s) as he is mentioned numerously and respectably in the Quran. His miraculous birth, life's miracles, being taken up to the heavens (ascension) and being returned at an appointed time.