There are a few different ways that the name "Riazuddin" can be spelled, but in general the phonetic transcription is /ria.zʊd.dɪn/. The first syllable starts with a "r" sound, followed by the diphthong "ia" and then a "z" sound. The second half of the name starts with a short "u" sound, followed by a double "d" sound and then the vowel "i" and the consonant "n". When spelling this name, it's important to remember the doubled "d" in the middle.