be engraved in (one's) memory
To be something that one will always remember. The day you were born is just engraved in my memory—I could never forget what it felt like to hold you for the first time.
be engraved on/in your ˈheart/ˈmemory/ˈmind
be something that you will never forget because it affected you so strongly: Although he was very young at the time, the date of his father’s funeral was engraved on his heart. Engrave means ‘cut words or designs on wood, stone, etc.’.