Nowadays during the Curfew between 6:00 AM to 3:00 PM if you want to go out side you must keep your national address with you.
As National address is one of the mandatory document required in banks, insurance and internet connection.
Go to the link, feed your iqama, mobile, it gives you proof of your residence, take a screen shot, to go out for groceries or medical during 6 to 3, in your neighborhood only.
You can also get a printable pdf if you click on the text
Field1: iqama number
Field2: mobile number
Next page: code no
from saudipost via sms
Next page: click إثبات عنوان and you will get pdf proof of your residence
Keep the Softcopy or print copy with you.