mentor.
Another word for "advisor" is "mentor" in English.
Another word for saviour is "rescuer" or "deliverer."
'advises' is one word for 'giving tips. 'coaches' is another. a 'mentor' might mentor, with a leaning towards active guidance in the tip-giving. 'tutor' is possible.
It's the same- mentor.
You could use a mentor, or a teacher.
You can mentor me if you'd like
Mentor comes from a Greek word, same spelling, meaning 'wise advisor'
the mentor mentored the student.
An antonym for the word mentor might be deceiver, or liar. A mentor is one who guides, teaches or advises. So something opposite in meaning would be one who actively mis-guides, or falsely teaches. Pupil is not the opposite of mentor.
Since that word is an eponym (a common noun made from a proper noun), the first mentor was clearly Mentor, the mentor of Telemachus.
MY MENTOR IS A VERY GOOD ADVISOR.