Traveling to Dubai ........Please Advice

No rule as such. Get KSA VISA first and u can directly proceed to UAE by paying 105/- AED for VISA and 100/- AED for isurance valid for 10 days.

I don't believe if there's any condition for 6 month residency etc.

since you've got an RP< you've become a GCC resident.

check your travel agent, plus Dubai/Sharjah International Airport websites, PLUS DNRD dubai.

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GCC country residence visa holders

Certain category of visa holders of GCC Countries can enter the UAE and the visa will be issued up on their arrival. Prior approval is not required

http://www.dnrd.ae/Dnrd/Transactions/Visitors/Visitors%20Services

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Passengers entry – expatriates living in GCC countries

This involves expatriates living in GCC countries and who are permitted to enter UAE territories

Required Documents:

Original passport or e-gate card

Valid residence permit (as appearing on the passport) and issued by competent authorities in GCC countries

Fees & Collection:

AED 100

Special Notes:

N/A

This service shall be offered at:

Dubai International Airport – Terminal (1)

Dubai International Airport – Terminal (2)

Rashid Port

Jebel Ali Port

Shendagha Port

Al-Hamriyah Port

Hatta Border Point