We (KSA, GCC and the Arab world) might have somewhat close business/economic ties with India but our military cooperation is almost non-existent excluding Oman and Egypt (traditional ally). It was different once, especially with pro-USSR Arab states.
However let's be serious for a while, India has nothing remotely similar to a THAAD missile defense system. Let alone the inferior Russian S-400 (in comparison) which KSA has also acquired.
Anyway what did you have in mind?
PS. This thread should be moved to the Arab section which is purely intended for military-related threads.