Stick by
Definition 1 of 2
Pro Tip 1/3Emotional Support
Used to express emotional support in times of trouble. 
He knew his best friend would stick by him during the trial.
Pro Tip 2/3Unwavering Loyalty
Implies a deep commitment and refusal to abandon someone. 
Despite the scandal, the community decided to stick by the mayor.
Pro Tip 3/3Challenges Together
Suggests a partnership approach to overcoming difficulties. 
We will stick by each other to get through these challenges.