The best advice I can give you is to go hire a civil litigation attorney to represent you (this is a summary proceeding, so they aren't going to charge you much money to represent you - but you will get the benefit of dealing with this matter quickly and professionally).
You can find local attorneys using the State Bar Association directory:
, or private directories such as www.AVVO.com
; or www.Martindale.com
(I personally find www.AVVO.com to be the most user friendly).
If you are not going to hire an attorney, you can represent yourself - restraining orders
are based on preventing an "imminent threat of harm or death" they take into account context and they look for a threat of actual harm.
So while the actual statement that you made is not favorable - the context is going to negate it
I have defended individuals that have made similar threats in personal protective orders (again things that probably shouldn't have been said, but they weren't actual threats, followed by ridiculous restraining order motions that had no basis other than to harass my clients) - these are quickly dismissed.
Visit your local law library and review books called "practice guides" they will give you legal tips and strategies to help distinguish cases where restraining orders were granted vs those that were denied.
I highly doubt that this restraining order is going to be granted, but hire an attorney (it will both increase the odds in your favor, and take a great amount of stress off of you).