Question

click to correct the pronoun if needed. of the hundreds of people who participated in the kenyan safari, it was us and our guide who managed to attract the attention of a pride of lions.

Explanation:

The subject - complement "us" should be in the subjective case "we" as it is part of the subject in the cleft sentence "it was... who...".

Answer:

Of the hundreds of people who participated in the Kenyan safari, it was we and our guide who managed to attract the attention of a pride of lions.