It's a common phrase used to express empathy or agreement with someone's experience or feelings.
Here are some examples of how it can be used:
* "Nakakarelate ako sa nararamdaman mo." (I can relate to what you're feeling.)
* "Nakakarelate ako sa kwento mo." (I understand your story.)
* "Nakakarelate ako sa sinabi mo." (I relate to what you said.)
It's essentially a way of saying, "I've been there," or "I know what you mean."