The word "NASRU" can be a bit tricky to spell, but it follows the basic principles of English phonetics. The first syllable is pronounced as "næs", with a short vowel sound and an "s" sound at the end. The second syllable is pronounced as "ru", with a short "u" sound and an "r" sound at the end. So the correct spelling of the word would be "NASRU" with an "s" and "u" in the middle. Practice saying the word with the IPA transcription /næsru/ to help with spelling and pronunciation.