The following are the types of divorce for non-Muslim couples:
One party converts to Islam
Either the husband or wife converts to Islam while the other spouse does not.
Annulment of marriage
An annulment petition is filed by providing proof that the marriage is invalid.
Dissolution of marriage by mutual consent or contested
Husband and wife agree to dissolve the marriage after two years of marriage, except with special leave of the court.
For contested dissolution, couples are required to go through a tribunal at the National Registration Department (NRD).
Reference:
Legal Aid Department