Psalm 91 9-15 shows that when you believe in God and you say that the Lord is my refuge and believe in what you are saying that you will be protected.
This psalm is telling you that if you truly accept and worship God, that you will be protected. “No disaster will come near you” if you believe in what you are saying and if you accept God as your refuge. If you are in a hard place you will always have God to support you if you choose to accept God. The psalm tells you that if you believe in God that in hard times god will believe in you and will help you.