India has been a close ally of Israel for quite a while now and has a strategic partnership with the US. They had stopped buying Iranian oil because of US sanctions a few years back and even exited Chabahar port recently. Neither uses each other's defence equipment. India also backed out of IPI a long time back.
India and Iran have had a mutually beneficial relationship, but they have never been strategic allies. The closest thing to a strategic allies that Iran has are China , Russia and North Korea, who are the main defence suppliers.