In a very meaningful sense, every action of the Buddha whether of body, speech, or mind was upaya: skillful means. What's more, every utterance of the Buddha was an approximation of the truth when heard, understood, and conceptualized by sentient beings. This is necessarily so because all conceptualizations are mere approximations and are by nature deceptive in that they are tainted by the ignorance of sentient beings.
The only way to the real truth - untainted by conceptualizations and elaborations - is via direct perception of emptiness. This must be experienced, not just inferred or understood by way of explanation, even if that explanation is coming from an Enlightened One.
Insofar as all conceptualizations or elaborations are mere approximation of the truth and tainted by ignorance, then you could say they are lies. But have no doubt the Buddha's actions - all of them - are Noble and motivated purely for the benefit of sentient beings.
Evil does not enter into it. That is a category error. Karma is a universal law much like universal physical laws. There is no great scale or moral arbiter dispensing justice or punishment based on moral judgements of karmic actions. This is just a wrong conception of what the Buddha was after when describing karma and dependent origination. Often western peoples who grow up with the cultural traditions and religions of monotheism where moral absolutes are a result of judgement by a higher power struggle with this. The Buddha never understood or intended to describe the law of karma as a form of universal justice or punishment for moral laws given from on high.
You can judge karmic actions based on the fruits they produce. Do they lead to suffering? To happiness? Do they have benefit? Do they harm? What has been empirically found is that actions that are undertaken out of pure motivation - cherishing others in combination with wisdom - are of benefit and bring happiness. Similarly, actions undertaken out of selfish motivation - cherishing oneself in combination with ignorance - are harmful and bring suffering. The Buddha is the personification of perfect motivation and perfect wisdom.