[googlopharm]

You don't need to recite the dua in accordance with the Hanafi madhab, hence your salat is valid. As far as I know the two sajdas are compulsory and as long as one lifts up from sajda so that he is closer to the sitting position than the sajda position, before going into prostration for the next sajda, then his salat will be considered valid. May a more knowledgeable brother correct me if I am wrong, but this is my understanding of the issue.