I myself over the years have learned it. All you need to do is look up elvish writing and then find the phrase you want then write it. I have actually learned the whole language (speaking and writing) and say that it is NOT easy.
Runya is the word for flame in elvish.
its in elvish
"bring" e' "Lord" en' i' "Rings"
You can use the dwarvish runes or the elvish script. There is a full table of the characters in the Appendix of The Lord of the Rings.
mellon (friend)
I suggest obtaining a copy of the Appendices of The Lord of the Rings. They include the translation of the runes and the elvish script.
The Tengwar is Tolkien's elvish script in The Lord of the Rings. According to The Silmarillion, it was invented by Feanor in Valinor.
Lembas, if you're talking about The Lord of the Rings.
There were several, for example Quenya was his principal Elvish language.
There is no real-life "Elvish" language like the ones created by J.R.R. Tolkien for his fictional works such as "The Lord of the Rings." However, fans have created languages inspired by Tolkien's Elvish languages, such as Quenya and Sindarin.
Elvish word for friend is mellon.
Lament to Gandalf(although that's in Elvish,) Into the West, and The Edge of Night (Part of The Sacrifice of Faramir)