Rest assured.
This is a bit of an old-fashioned saying - at least in my mind, But it struck me how thoughtful, kind, and comforting it is.
I heard it the other morning doing an online meditation session. As part of the instructions, the participants were told that "Rest assured, you will hear the sound of a bell at the end of the session."
You really could rest, assured that this person was looking after your needs, They could be relied upon. You don't need to carry the load for this.
Where do you need some assurance that you can rest about a matter that is burdening you? And where can you help someone else rest assured?