If you are an Indian government employee planning an official visit to Saudi Arabia, you may be eligible for a diplomatic or official visa. To apply for this type of visa, you will need to provide the following documents:
A diplomatic note or an official letter from the Indian government.
A completed application form.
A recent passport-sized photograph.
A valid passport with at least six months validity remaining.
A letter of invitation from the Saudi Arabian government or organization you will be visiting.
Proof of accommodation in Saudi Arabia.
Proof of return air tickets.
Proof of sufficient funds to cover your expenses while in Saudi Arabia.
Once you have gathered all the required documents, you can submit your application to the Saudi Arabian embassy or consulate in India. Processing times can vary, so it's best to apply well in advance of your planned travel dates.
Again, I would advise you to check with the Saudi Arabian Visa Agency in India for specific requirements and instructions.