A Christian Science perspective.
At times of fear or danger, the psalm has helped many who have turned to it for protection. It is a prayer that will lead out of danger and fear each individual who turns to God as omnipresent good. It can also be a guide for those of us who want to help however we can.
The opening verse of the psalm declares: "He that dwelleth in the secret place of the most High shall abide under the shadow of the Almighty." This promise of deliverance from evil makes known the conditions under which security may be realized. It is because one makes God his or her refuge that another promise is given: "There shall no evil befall thee, neither shall any plague come nigh thy dwelling." Neither pestilence nor destruction shall harm the one who abides under God's shadow.
I have found it helpful to think of "the secret place of the most High" as our consciousness. Jesus taught that the kingdom of God is found within us, within our own consciousness. God speaks to all of us in our consciousness through spiritual thoughts that lift us beyond fear, destruction, revenge. In the presence of a God who is all and only Love, there is deliverance from evil. When we abide in this place, we are shielded from danger.