Szeretettel Emlékezve
This phrase is frequently used on memorial plaques, headstones, and other tributes.
Here are some other ways to say "In Loving Memory" in Hungarian:
* Szeretettel Gondolunk Rád (We Think of You with Love)
* Örökké Szívünkben (Forever in Our Hearts)
* Emléked Él (Your Memory Lives On)
The best translation for you will depend on the specific context and the tone you want to convey.