What is the correct order dna-RNA-protein or dna-protein-RNA or RNA-protein-dna?

Answer 1

It's DNA - RNA - protein.

DNA encoding a gene is transcribed to mRNA or messenger RNA by RNA polymerase. The RNA is then translated into a protein sequences at the ribosome. tRNA's or transfer RNA's act like a dictionary for the translation. They can recognize a code of three nucleotides (a codon) in the RNA and bring the corresponding amino acid to the right place at the ribosome, where it is ligated to the rest of the protein. A protein is a chain of amino acids.

see http://en.wikipedia.org/wiki/Central_dogma

Answer 2

The correct order is DNA-RNA-protein. DNA is transcribed into RNA, which is then translated into proteins. RNA is the intermediate step between the genetic information stored in DNA and the synthesis of proteins.