Divorce

So basically this guy had a troubled marriage, the couple is Indian , lives in dubai since last approx one year. The woman has been a nuisance in his life ever since they married 19 years ago, 2 kids… now the guy has had enough bcz the woman can’t stop fighting unnecessarily. She accused him of sleeping around with some other woman, which as per the husband is bullshit and he said he can prove he was in office working till late hours. So all in all a troubled long marriage is finally ending. Now the guy has left his home and the woman is yelling and shouting that she will commit suicide. He wants to know what is the legal recourse he can take to safeguard himself in dubai. Their last place of residence was Gurgaon, he said he will file for divorce.the woman is very eccentric , all the threats etc have been recorded over WhatsApp messages. She bullies her husband by accusing him of sleeping around, while her own actions have been questionable, recently she was diagnosed with HPV( sexually transmitted disease) , when the husband asked her she casually replied must have happened from you… and then went quiet. The diagnosis was done in Sep 23, the husband went quiet for the sake of children for 3-4 months bcz she sent a text to him that she has been under stress and doesn’t want any quarrel. But when again she picked up a fight and the husband finally questioned her , she coolly put the blame on him and didnot divulge any further. The man has left the house and visits only to meet children. The communication between them is minimal. I am asking this question on behalf of my family member( the man in this case)