I will say of the Lord , He is my refuge and my fortress: my God; in him will I trust.
Psalms 91:2 KJV
Refuge is a place of protection. It is a place where not-so-important people go to, to be cared for. In the verse, Jesus protects the not-so-important things in your life like your hair, finger nails and petty worries.
Fortress is also a place of protection. There is exceptional security in a fortress and it can withstand very powerful force. In the verse, Jesus protects the big things of our lifes. Jesus protects you from those who have taken a calculated decision to destroy you.
In general at all places, Jesus protects you. From very insignificant things to the very important things. This is a sign of genuine love. God does love you. Remember that.