Firstly, you don’t need to use that method of petitioning if you don’t wish to. There’s no need to protect yourself from these spirits, as long as you are respectful and polite, and you have the correct expectations/mindset. The book includes them because many beginners have concerns about the safety of working with demons, and the book is catered to that crowd.
I would word the petition as something like, “I easily and quickly open sigils, and I easily perceive spirits.”
It’s important to state your request in the present as if it’s already manifested. Read the book, it explains it all in there about how to word petitions, etc. You can use this wisdom/knowledge with any method you use to contact or work with the Goetia.