Report of the Special Rapporteur on the situation of human rights in the Islamic Republic of Iran, E/CN.4/1999/32, 28 December 1998
Some of the discriminatory laws faced by minorities in Iran are:
Article 121 of the Islamic Civil Code: The punishment for “homosexual touching” (Tafkheey) and similar acts, if there is no entry, is 100 lashes. However, if the subject is a non-Muslim and the object a Muslim, the punishment for the subject is death.
Link to full tex of the report: Report-SR Iran-1998-eng