The appropriate response to the Islamic greeting "Assalamu Alaikum" is "Wa Alaikum Assalam."
"Assalamu Alaikum" is an Arabic phrase commonly used as a greeting among Muslims, and it translates to "Peace be upon you." The response "Wa Alaikum Assalam" means "And peace be upon you too." This exchange of greetings is a sign of peace, goodwill, and respect within the Islamic tradition.